We purchased our 1998 Isuzu Trooper (3.5L V6) new in the Spring of
1998 and since day 1 have experienced oil consumption issues.
I used conventional oil up until about 10,000 miles and at that point
switched over to Mobil 1 synthetic oil 10W30.
Frustrated with the oil consumption, at the 95,000 mile mark, I
switched over to a Mobil 1 15W50 and on a recent trip (1300 miles), I
didn't use a drop of oil. During this trip, I would have normally
used at least a quart of oil (with Mobil 1 10W30).
I talked with Mobil 1 about a blend and they said there weren't any
issues with mixing different Mobil 1 weights, so, I have gone to a
blend of 2 quarts Mobil 1 0W40 and 3 quarts of 15W50 and I am happy to
report, consumption is at zero.
Just wanted to pass this on to anyone who may be having oil
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