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I build VW engines for sandrails.......for NEW rebuilds, during break-in process, I use a non detergent 30W for the first 25 miles. I then recheck timing, valve adjustment, carb (s) and change oil using a 15W40 (not synthetic) 10W40 is also good. These are both great for 1600cc. However, if you operate in EXTREME heat (+90 degrees) with a lot of stop and go traffic you may choose to use a 20W50 (non synthetic).

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14y ago

What else can I help you with?