Re: New available motor oil

Posted by Owen_Dyneto On 2014/8/18 14:28:10

SAE 15-50, for the climate of Virginia? Sounds to me like a really poor choice! 50 weight motor oil is about the same viscosity as SAE 90 gear oil - see chart; in my mind the concern would be the resistance to flow that the higher viscosity gives. Not that changing it at this point may solve your lifter problem. The often-quoted advice of running about 1/2 quart over full seems harmless and perhaps helpful, it should put the level at about 3/8 inches above the Full mark on your dipstick. Add more and at some point you run the risk of the rods dipping which will whip your oil into a froth!!

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