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Re: 15W-50 is a little thick, 10w-30 or 10w-40 is. (archive)

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Posted by ///M325 on May 16, 2001 at 09:48:39:

In Reply to: 15W-50 is a little thick, 10w-30 or 10w-40 is...>> posted by ZV on May 16, 2001 at 06:41:03:

Is it a constant tapping or only after high rpm runs? I found that oil foaming caused tpping to appear that would go away after driving normally or idling for 10 min. or so. I changed from mobil-1 to redline 10W-40 and never heard tapping again. I think mobil-1 will foam more than redline.

I live in nor cal where it is going to be 90F plus for awhile. I've always used 15w-50 mobil one synthetic, and have always had lifter noise (tapping). Will a 5W-30 or 10W-30 help fix this?I've used 10W-30 before and i noticed the car revs much quicker, but is it at a loss of high rpm protection, what you think? The car is a 95 with almost 80,000 mi.

much better, even for the higher heat areas. It has been noted that the thicker stuff actually
INCREASES frictional heat, it's takes more power
to push the thicker stuff through the system, thereby causing slightly more heat.
A 10w-30 or 40 will let your car run better and
still provide the protection you need, just make
sure it's synthetic.

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