Originally Posted By: wn1998
2009 Nissan versa is now out of warranty. I have been doing 6-month 7500 OCI's (G-Oil, M1, major brand sale Synthetic was used) and was wondering if the relatively small sump (4 qts) would handle a 1 year 15k OCI?
I know I should send a sample out but just give me your best educated guess. This car see's frequent 45 minute stop and go suburban drives to work.
If the car is driven 45 minutes at a strtch, moisture should always be evaporated from the oil
Fuel dilution shouldn't be a problem, unless the thing is always run hard and kept in the richer part of the fuel map.
It isn't so much sump size as power potential that would limit OCI length.
The Versa has a small engine of pretty low specific output, so it probably wouldn't tax its oil very much, even if it only holds four qts.
Having said all of the above, I'd stay with 6 months/7.5K OCIs, unless you're willing to invest in a couple of UOAs with the oil you decide to use.
You could UOA the oil after 7.5K and then go from there.
I'm not sure what you're after, since four qts of oil and a filter every six months is not much of an expense.
The more I read here the less value I place upon UOAs, since while they're fun and informative, the information they really convey is all in the interpretation.