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Old 04-27-2001, 10:14 AM
apb apb is offline
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Join Date: Mar 2001
Location: Houston, Texas
Posts: 443
I thought it was generally better not to have more than a 20-30 point spread between the low and high viscosity numbers (something about additives).
I live in Texas so I have been using 10w30 synthetic oil with change every 5000 miles (my car is a 1997 which would require change every 7500).
Ow40 is a forty point spread which I thought was not the best (unless you live in freezing climates that would best benefit from the 0 value when cold)
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