Hi Marcus, You might want to consider the following when changing the oil in your Porsche. Love, Pop > > Hey Don, > > You also have to consider the design of the engines. Low ZDDP > > mostly affects "Flat-Tappet" designs (think Harley Davidson or flat 4 & > > 6 PORSCHE). (FYI -- ZDDP=Zinc dialkyldithiophosphate) > > > > Here are some examples: > > Valvoline (VV150-6PK) MaxLife 10W-40 Higher Mileage Motor Oil. ... > > Pennzoil High Mileage Vehicle Oil. ... > > Mobil 1 45000 5W-30 High Mileage Motor Oil. ... > > Castrol 06470 GTX 20W-50 High Mileage Motor Oil. > > > > Also, try Allen's suggestions or google high ZDDP oils. > > > > Good luck! > > LarryT > > youroil.net > > 06 E350 > > 91 E300D (best car I ever owned) > > > > On 10/16/2019 2:18 PM, Don Snook via Mercedes wrote: > > > For old school NON-MB (cast iron block) and 1984 technology would shell > > > Rotella (or something similar) be best because of the higher zinc content? > > > > > > Donald H. Snook > > > FedEx Freight
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