Any known factors affecting oil consumption?

[tomdietrying]

Hmmm, before this Moab trip I switched to Firestone's more expensive synthetic oil. I did notice I would use about a half quart of oil every 1,000 miles on this trip. I seemed to burn more driving 80+ mph on the highway to and from Moab.
Peace.
Tom

[Gussie2000]

I recall reading this articule about isuzu's 3.5L engine oil burns was related to the cylinder's size,they say isuzu engineers looking into reducing the 3.5L engine's weight they mistakenly designed the cylinders lenght size too short to handle the engine displacement & along with wrong cylinder rings specs.

I'm not sure how much this can be true,but to me it makes sense somehow

[johnnyapollo]

I've calculated that I lose about 1/4 qt every 1k miles. My VX has done this since I bought her new and it's been very consistent. I've been told it's typical with this particular motor and I believe it.

-- John

[VX KAT]

Like you Tom I kind of thought it must be due to the long stretch of high speed driving, so I fully expected it to do the same thing on the way home...but nada, not a drop appeared to be missing. Then I thought maybe due to some changes in elevation but, the 4,000 - 6,000 feet were almost identical to my daily/home location. I think it must be something with the high speed driving, but the real mystery is why the heck it didn't happen on the way home?? .....

oh well, who knows, just another one of the wonderful mysteries of the VX! :grinp: