oil myths?!?
#21
Ice road truckers use 0w30 oil. 10w30 is also starting to show up in the new trucks. Its a little thinner than the 15w40 so maybe a little more oil consumption but is strong enough for heavy duty operation from what I have read. http://www.gofurtherwithfs.com/Produ...ec%20Sheet.pdf
#22
Bingo! In reality longer intervals have been in owners manuals for half a century. Ford had a 6000 mile recommendation in the early 1960's. By the 1990's most automakers were comfortable with 7,500 since oil chemistry was so much better by then. The only cars I owned with a legitimate 3000 mile interval were air cooled VW's that had no oil filter, only held 2.5 quarts and had poor temperature control compared to liquid cooled engines.
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