> I'm sure that the Mobil 1 synthetic 15W50 is part of the problem.
> These old engines weren't designed for this thin synthetic stuff,
> were they?
Um, well I'd hardly call 50 weight 'thin' ... remember the first number in
multi-weight engine oil specifications only applies at 0C when you need thin
oil. The second number applies at 100C, which is pretty close to where your
oil should be when the engine warms up.
Randall - with 20W50 synthetic in all my Triumphs
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