Quote:
Originally Posted by Fairfax 944
Steve, you may wish to reconsider using Mobil 1 in your 944. You have the old style lifters, (not the newer roller lifters), and need zinc in your oil to keep from getting too much wear in the lifters.
Consider a comparison of wear metals using Blackstone Labs. I used to use Mobil 1, but have switched to Rotella T6 5W40 Synthetic used in heavy duty diesel engines. It's available in gallon jugs from Walmart. I know there are better race oils, but this has a lot of zinc in it, and I'm using it in 3 of my vehicles.
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OK, so due to a lack of having M1 last time, I bought some Rotella and plan to try it out (today is oil change day). Stopped by WalMart today and 15w50 is back. The unit price difference between the two is about $.05.