Oil usage (to my knowledge) has been a known problem since the 3.2 v6 was
introduced in 92. Just check the oil at every fill up...no big deal. I
can't confirm any changes to the engine design, etc... I have noticed that
later model 3.5's look a little different under the hood...but that could
just be a cosmetic change. At any rate, I've not heard of hardly any engine
problems with the 3.5's. I have heard a few complaints about transmission
problems, but still not enough that I'd consider them any worse than any
other make or model of vehicle. The fact that Isuzu originally offered a
10yr/120k mile drivetrain warranty on the later model Troopers (at least
2000-2002, maybe before) tells me they are confident that they have produced
a good product.
We have a 2002 Trooper that we bought new in April of 2003. It currently
has 35k miles on it and has performed wonderfully. At around 20k I changed
over to synthetic oil. All along it's been pretty random with oil usage. I
doesn't normally burn oil, but occasionally you'll find that it has suddenly
consumed 1/2 quart. I've recently begun to realize that an unlevel parking
spot seems to influence the level somewhat...and perhaps that's part of the
perceived problem (at least on ours). When it was still nearly new there
was a part replaced under warranty to fix a problem with hesitation upon
acceleration right after a cold start. It went away, then came back, and
has slowly gone away again. Other than that, I've not had any work done on
it. We had an 18' travel trailer that we replaced this spring with a 20'
and it does a great job towing both of them. Probably 10% of the miles are
from towing. I did have an auxiliary transmission cooler installed just to
be on the safe side...figured it was cheap insurance.
We also have a 94 Trooper that my wife drives every day. It's working on
rolling over 150k miles and doing pretty well. It's had its share of odd
problems, but no more than average for any other vehicle I'd say. We bought
it with about 115k. Just don't do that...unless you are already thinking
about the new timing belt...that's due at 120k. Oh well! A good bargaining
point if we ever do buy one at that mileage again. I think the 3.5's in the
later troopers have an 80k interval....
At any rate, I wouldn't at all hesitate to recommend a 2002 Trooper.
Depending on where you are and how far you want to drive, take a look at
www.autotrader.com. I've seen a number of surprisingly low-mileage Troopers
out there...
Wesley
<brian3 RemoveThis @gmail.com> wrote in message
news:1194472359.410282.235890@e9g2000prf.googlegroups.com...
> I am interested in buying a 2002 Trooper from reviews. I was hopin to
> ge more infoon the subject, but I read that the last model (1998-2002)
> has engine oil issues. No leakage, but rather it burns off i the
> cylinders due to insufficient or clogged "oil return" lines, an Isuzu
> design flaw in the engine. Supposedly the problem was fixed (this is
> what I want more info on) for the 2002 engone, increasing the return
> lines from 4 to 10+, thus remeding the oil flow/ loss issue. For the
> non-corrected engines I read something about cleaning/ replacing the
> PCV valve and other breathing elements and running a cleaner/solvant
> to unclog the 4 lines to allow for unobstructed oil flow through the
> engine. Double check before attempting the fix. None the less, I
> thought you might want to know that from all that I read (and by
> repairing the issue on the 2002 model) Isuzu is aware of the flawed
> engine design and oil changes are really a mute point and have little
> of nothing to do with the engine seizure. Hope this helps. PS If
> anyone can verifiy the 2002 fix, it would be appreciated as I plan to
> purchase one if this is the case.
> -Brian
> >> Stay informed about: 2000 Trooper Needs New Engine and Isuzu doesn't want to ho..