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Started by tmsmini, June 03, 2021, 11:41:50 AM
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Quote from: MiniDave on December 16, 2021, 02:41:55 PMRichard wrote a great paper on the correct oils to use in our classic cars, and I've been following his recommendations in my cars.I'm using up the last of my 20W50 and will be swapping over to 10W40 when it's gone.I've also done 3 automatics and put 10W40 MA2 in all of them, they all worked smoothly as could be after the changeover - of course I had no inkling what was in there before.The only time I might be tempted to use 20W50 is on a long highway run in the hot weather.