Originally Posted By: demarpaint
Originally Posted By: jacky
go to walmart and ask one of their oil specialists who are trained about such things, instead of asking some stranger on the internet
Now that's some sound advice.
Originally Posted By: kschachn
Yeah we know, thanks.
Originally Posted By: jacky
i always change mine every 3,000 no matter what
LOL..It takes so little to make me smile.
"Aunt Minnie" test done by Mobil about 20 years ago:
1. The aunt minnie test is the test of "the severity on the engine oil during this type of testing is attributed to conditions where the engine rarely reaches optimum operating temperatures."
2. The driving test consists of two short cycles, a 3 mile and 1.5 mile test.
3. "Under this severe driving condition, synthetic oil can provide excellent protection against engine wear and deposit formation."
4. The bulk oil temp ranged from 90 C in the summer to 30 C in the winter.
5. Fuel dilution was as high as 11%.
6. Cleanliness was excellent, the deck sludge rating was 9.7 out of 10.
7. "The iron content showed a low rate of increase, only 100 ppm after 40 months, although there has been a steady increase to over 600 ppm over the last 22 months. The source of iron has not been determined, as visual inspection of the engine did not indicate any abnormal wear or corrosion. In addition, elevated iron levels have not appeared in other test vehicles operating under 'aunt minnie' conditions."
The oil was a 5W30 running in a 3.1 L
V6 with no oil drains.
The oil volume sampled was 5.5L and make-up was 4.4L. TBN retention was 33.
Test duration was for
60 months.
