3.5l V6 Engine Record

Discuss anything related to drivetrain problems here (Engine, Transmission, etc)

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How is your 3.5l V6?

Running Strong, doesn't use any oil
157
25%
Running Strong, uses some oil (<1qt in 1k miles)
318
50%
Running Strong, uses more oil than gas (>1qt in 1k miles)
92
15%
Dead & Replaced (or sold). Used no oil when alive
17
3%
Dead & Replaced (or sold). Used oil when alive
49
8%
 
Total votes : 633

Re: 3.5l V6 Engine Record

Postby 404momi » Tue Dec 11, 2012 12:21 am

double post.
Last edited by 404momi on Tue Dec 11, 2012 3:41 pm, edited 1 time in total.
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Re: 3.5l V6 Engine Record

Postby 404momi » Tue Dec 11, 2012 8:40 am

Hi Everyone!

I am replacing the engine in my 1998 Acura SLX (Trooper engine). Reading all of the replies here has me kind of worried... any tips on what I should do to make sure my new engine doesn't develop the same problem this one has?

I'd just changed the oil in my SLX about 900 miles ago - had no idea about the oil problem. Was on my way to work and the truck started knocking - my mechanic said the engine seized.

Any help would be most appreciated.
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Re: 3.5l V6 Engine Record

Postby jean ashkar » Fri Jan 18, 2013 5:29 pm

hi I bought isuzu trooper recently & the engine was in bad shape burning 1 quart of oil every 100 miles so I decided to change my engine I bought a used one still at the mechanic to change the engine after looking at several engines like chevy pathfinder land crusier patrole youkon & other piston I found that drill holes in the piston is the best way to reduce oil consupmtion due to my trooper cause when I put new oil for the first 200 miles the oil gos to black color that means it's burn & after that when oil is burn it startes to go low in level so I am putting now my new used engine I bought it for 900$ and drive if it burn oil I will take the engine out make holes on the piston & solve the problem ( example see all the piston of the car I mentioned all of them have 8 holes at least in each piston while isuzu have only 4 small one 1 mm as diamter which means oil will stick after leaving the holes & find no way in coming back down so the spark plug with the gas burn the oil on top of the piston & the oil gos burn & out from the exhausted my advise is to make holes on the piston wall
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Re: 3.5l V6 Engine Record

Postby sassee » Wed Jan 23, 2013 5:43 pm

404momi wrote:Hi Everyone!

I am replacing the engine in my 1998 Acura SLX (Trooper engine). Reading all of the replies here has me kind of worried... any tips on what I should do to make sure my new engine doesn't develop the same problem this one has?

I'd just changed the oil in my SLX about 900 miles ago - had no idea about the oil problem. Was on my way to work and the truck started knocking - my mechanic said the engine seized.

Any help would be most appreciated.



find a good 3.5 to rebuild and drill the pistons and it will be fine. Mine is now on it's second anniversary since drilling the extra holes and it runs great and uses absolutely no oil in between 5000 changes (YES, I change mine every 5000 miles)
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Re: 3.5l V6 Engine Record

Postby jean ashkar » Thu Jan 24, 2013 4:55 pm

hi I change my engine & the mechnic said it's ver nice & smooth but unfrotunetly my transmissoin is slippery now & they told me to change oil fliud how many liters does it take that isuzu of oil tranmisson
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Re: 3.5l V6 Engine Record

Postby jean ashkar » Thu Jan 24, 2013 4:56 pm

and the trabsmission filter too
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Re: 3.5l V6 Engine Record

Postby jturbo » Sun Mar 10, 2013 4:08 am

1998 Acura SLX 240k Original Engine and trans

Burns Oil but runs great check the oil every fill up

Added oil catch can to slow the blow by and you'd be surprised by the blow by in these engines

Running diesel Synthetic oil and seems to slow the oil burning

Also Trans changed to Mobil 1 trans fluid and change every 60k runs great.

5 Idle Air Control valves (Used to rebuild them myself but got tired of it) (Autozone and other companies ones are CRAP) (Buy the factory one they last longer)
Spark Plugs every 30k just for my sanity (tried all types settled on Iridium NGK least problems
4 starters
1 alternator Upgraded to 99 Higher output than 98 and bolts right up
1 Idler pulley for serpentine
1 A/c Blower motor died at 200k
1 fuel pump replaced just for preventative at 200k
almost didn't pass smog last year and got Cat bad code from OBD2 (ran turpentine through tank 1 gallon and cleaned cats no more problems this was at 200k)
replaced fromt wheel bearing and cv boots
planning on trying Terra Clean to clean rings at some point

That's it

Great truck wish they still made it.
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Re: 3.5l V6 Engine Record

Postby Lakeshow24 » Mon May 06, 2013 6:43 pm

I had one '99 Trooper engine burn a valve around 250,000-260,000 miles. That truck is no longer mine. I have another '99 and this engine is at 203,000 miles with no problems. It doesn't burn an excessive amount of oil either.
I'm too slick for you!

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Re: 3.5l V6 Engine Record

Postby jeffryscott » Mon Jun 10, 2013 10:20 am

2002 Trooper, 106K, no oil loss issues.
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Re: 3.5l V6 Engine Record

Postby justuspost » Mon Sep 02, 2013 1:25 am

155000 and burning 2 quarts every month. Thinking about replacing / rebuilding the motor, but have yet to find a cost effective way to do this... Would love to hear ideas and suggestions!!
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Re: 3.5l V6 Engine Record

Postby TechnoM3 » Wed Mar 12, 2014 5:47 pm

212k miles.

Burns a qt of oil/200 miles and valves tick, but no other issues.
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Re: 3.5l V6 Engine Record

Postby mrfeather » Tue Mar 25, 2014 11:27 am

I have a 2000 3,5 Trooper It used oil about a qrt every 300 to 500 miles. Change oil in all my cars at 2500 miles. Yesterday driving from Chattanooga to Atlanta the truck started making a ticking sound not a knocking sound as a rod would do. Was running when I pulled it over to the break down lane and shut it off. Had the truck towed home they unloaded it and I went to start it and it will not turn over just makes a click sound I have no clue ?
________________________________________________________________

2000 Trooper 169,000
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Re: 3.5l V6 Engine Record

Postby TrooperOfIndia » Wed Mar 26, 2014 7:47 pm

Could be the starter.

By the way I have a 2002 Trooper. Used to burn 1.2 quarts/1000 miles. Got replacement engine in 2012 and that one burns no oil at all.
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2002 Isuzu Trooper TOD 4x4
Dealer rebuilt Transmission 2009
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Re: 3.5l V6 Engine Record

Postby fwdixon » Tue Jun 03, 2014 5:46 pm

Was given a '99 by my folks, they forgot to tell me about the oil usage and stupid me didn't bother to check as much as a should. I'm now rocking a reman block....won't make that mistake again. Every fill up I check. Good news is the reman is 1qt per 3K where the original was 1qt per 1K.
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Re: 3.5l V6 Engine Record

Postby foop09 » Wed Jun 04, 2014 1:51 pm

I bought my trooper about 5 years ago with 113,000 miles and at the time it was only burning a quart every 300 miles. Now the 3.5 has 178,000 miles and is burning a quart every 120 miles. She smoked like a pipe, and would barf up black soot when I would rev her up! Getting a re-manufactured motor installed at the moment, I hope this one turns out better. It had plenty of power, I just couldn't take it anymore!
1988 Trooper "Clarence" - SOLD
1998 Trooper "Clarence Jr" - 3.5 V6, Manual, 265/75R16 Dakota Definity All-Terrains, Cherry Bomb Vortex Muffler, AISIN Hubs, T-bar crank with Cherokee coil springs, Pioneer stereo w/ Kickers all around, Plasti-Dipped trim black and tint.

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Re: 3.5l V6 Engine Record

Postby MonsterD » Wed Jun 04, 2014 3:18 pm

I posted here a few years back when I rolled 200k. I'm now at 265k and it still runs the same. It doesn't smoke and is as powerful as ever. It started to leak oil but I dumped in a bottle of APT-AT205 and leak has stopped. It burns about a quart every three tanks. Go Isuzu!
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98 Trooper LS Oil Consuming DOHC 3.5 V6 and BF Goodrich All Terrain 285/75 16's otherwise stock driver which I absolutely love! Portland, OR
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Re: 3.5l V6 Engine Record

Postby SteveSample » Sun Jun 08, 2014 12:14 am

Hi, At 114,000 miles, my 3.5 engine 2000 Trooper burns one quart of oil every 1000 miles or so. I use Rotella T or Delvac 15-40 oil. I live in Phoenix, so don't need 10 weight oil. With this high burn rate it seems that I can extend my oil change interval by a lot, since I am always putting in fresh oil and burning out the old. My thinking is that for a four quart capacity example, at the time I replace the low quart, I always have 25% new oil with the oil that I just put in, the next quart is 75% fresh, the third quart is 50% fresh, and the fourth quart is 25% fresh. Stated another way, my average detergent and additive level is 100% plus 75% plus 50% plus 25%. This averages out at 62.5%. Maybe someone can come up with a math equation that would run out for 15,000 miles and could calculate how "fresh" the oil would be at this time and distance? Also, as a practical matter I always add oil when the dipstick is 1/2 quart low and I usually change my oil and filter at 5000 miles, splitting the difference between the 7,500 normal and 3000 severe duty factory recommendations.

Finally, I once did an oil test on a Volvo 850 engine with 175,000 miles and after 8000 miles and it was recommended that it was time for an oil change, but the oil was in pretty good shape still. That engine did not burn much oil. I know I could always do a oil test on the Trooper, but wonder if anyone has done one on this 3.5 liter engine that burns oil and would share the results. Thanks.
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Re: 3.5l V6 Engine Record

Postby partsmon625 » Wed Jul 09, 2014 2:19 pm

I have a '99 Trooper with the 4L-30E trans. I bought it with blown trans a while ago. Got trans built and reinstalled and fixed the many things that need to be repaired. CV boots, starter, EGR valve and tube, etc. Got roadworthy and decided to drive it for spring work which took me to New York state between Feb and April. The mileage was 223 K and it used about a quart of oil about every 500 miles. The oil change I did before the trip was with Rotella T6 5w-40. It burned it at the rate I stated previously. After about 2K miles the consumption started dropping very slowly. The majority of the first 1K miles was on interstate driving speeds. At around 3K-3.5K miles the consumption dropped to about one quart every 1.5-1.8K miles. I was really surprised and very glad! I changed oil and filter again at about 3.5K with the T6 again. So now having used the T6 for about 5-6K miles, the oil level is hardly dropping at all. One this last oil change I now have about 1.8K miles and the level is not dropping. This oil was suggested by Jerry Lemond a year or so ago and I thought it would be worth a try. It has worked better than I could have ever imagined! If I had this story told to me I'm not sure that I would believe! But since it happened to me I have become a believer !! Who would ever think that an engine that kind of mileage would clean up that well that quickly. I was thrilled that it just dropped to a quart every 1.5K miles. Thank you Jerry for the suggestion. I am totally amazed that this could make such an incredible change in oil usage. I have become a complete believer in Rotella T6.
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Re: 3.5l V6 Engine Record

Postby SteveSample » Wed Jul 09, 2014 6:17 pm

partsmon625 wrote:I have a '99 Trooper with the 4L-30E trans. I bought it with blown trans a while ago. Got trans built and reinstalled and fixed the many things that need to be repaired. CV boots, starter, EGR valve and tube, etc. Got roadworthy and decided to drive it for spring work which took me to New York state between Feb and April. The mileage was 223 K and it used about a quart of oil about every 500 miles. The oil change I did before the trip was with Rotella T6 5w-40. It burned it at the rate I stated previously. After about 2K miles the consumption started dropping very slowly. The majority of the first 1K miles was on interstate driving speeds. At around 3K-3.5K miles the consumption dropped to about one quart every 1.5-1.8K miles. I was really surprised and very glad! I changed oil and filter again at about 3.5K with the T6 again. So now having used the T6 for about 5-6K miles, the oil level is hardly dropping at all. One this last oil change I now have about 1.8K miles and the level is not dropping. This oil was suggested by Jerry Lemond a year or so ago and I thought it would be worth a try. It has worked better than I could have ever imagined! If I had this story told to me I'm not sure that I would believe! But since it happened to me I have become a believer !! Who would ever think that an engine that kind of mileage would clean up that well that quickly. I was thrilled that it just dropped to a quart every 1.5K miles. Thank you Jerry for the suggestion. I am totally amazed that this could make such an incredible change in oil usage. I have become a complete believer in Rotella T6.


That is great! I just bought a a gallon of Mobil Delvac 1300 Super 15-40 , which has the same API Service ratings as the current Rotella I have in the motor. I wonder if it is essentially the same? I heard the Delvac advertised on one of those all night am radio trucker shows recently.

By the way, my dad was a chemical engineer at Shell Oil and always said that Rotella was the best oil out there in the 1980's. He bought it in those big red 5 gallon cans. Some things don't change!
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Re: 3.5l V6 Engine Record

Postby antigen_dw » Wed Jul 30, 2014 3:52 pm

Mine has 120k miles on it and have owned it for only 5 months. I just follow what the old owner said, Seafoam 50miles before oil change (5k interval), mobil 1 5w30 or amsoil + .5 quarts of MMO. I usually just top it off with MMO. Last 5k miles I had, I only had to pour in 100ml of MMO to top it up.
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93K 2008

Postby camposrf » Fri Oct 10, 2014 2:34 pm

15w40 mineral oil since ever.

No oil consumption

I do not let the engine go more than 3000 RPM. Over 4000 RPM the consumption is noticeable. It applies to several engines from today’s cars.
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Re: 93K 2008

Postby SteveSample » Fri Oct 10, 2014 2:57 pm

camposrf wrote:15w40 mineral oil since ever.

No oil consumption

I do not let the engine go more than 3000 RPM. Over 4000 RPM the consumption is noticeable. It applies to several engines from today’s cars.


I just drove 500 miles at 70 mph with a full roof rack and four passengers, which included long freeway hill climbs out here in the western USA. I started at 117,500 miles with the dipstick on full and ended at approximately 118,000 miles. To fill back to the full mark took 1/2 quart. I am using Delvac. Around town it does use less oil.
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G80 Differential, Aisin Manual Hubs, Yokohama Geolander ATS 245/70/16, Custom Roof Rack, GPS and CB.
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Re: 93K 2008

Postby camposrf » Sun Oct 12, 2014 8:25 am

SteveSample wrote: (...) 70 mph (...)


Is your Isuzu a manual transmission one? How about average RPM during the trip?
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Re: 93K 2008

Postby SteveSample » Sun Oct 12, 2014 6:28 pm

camposrf wrote:
SteveSample wrote: (...) 70 mph (...)


Is your Isuzu a manual transmission one? How about average RPM during the trip?


It is an automatic transmission. On the long upgrades I have to downshift to 3rd or it jumps back and forth between 3 and 4. So I use no more than 3000 rpm when I am holding in 3rd. On the long climbs out of the Phoenix and Verde Valleys, I just drop back to 55mph and 3rd gear, which is about 2500-2600 rpm. Otherwise it turns about 2600-2700 rpm on the level and downhill stretches at 70 mph. Around town I let it upshift at about 2200 to 2400 rpm. The engine has plenty of power in FWD low, is adequate in city traffic and a dog out on the open road. My mpg seems to average about 15.5 in all conditions. In FWD low range, I go through amazingly rough and tough trails, but with the OME 912 springs, I could use another inch of lift over some the big rocks that the "monster trucks" expose when they churn the trails, while they are muddy.
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Re: 3.5l V6 Engine Record

Postby jetpirate » Mon Nov 17, 2014 10:03 pm

Got a 2001 Trooper I've owned since new with about 185000 on it now. My oil burn has just increased to about 1qt per 1000 mls. Used to go 1qt in 5000 mls where I have been doing the oil change. Used to do oil changes at 3000 mls but when oil got so danged expensive a few years back I now do it at 5000. Have been using Valvoline Synthetic 5w-30 in winter and 10w-30 in summer. Other than using Rotella T6 and making sure the PCV valve is clear what other options are out there to slow the oil burn?

Thanks for any help.
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