Quote:
Originally Posted by boxster03
Shell 30WT - good enough for Porsche in 1973
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Really? really?
You do know that the 30W oil in 1973 was totally different than whet you get now and multi-viz oils in 1973 were not very good.
Stick with a good 20W-50 or 15W-40 with decent ZDDP and TBN numbers