The guys on Ford Barn, a web site for Model A,T and flathead fords are
recommending that we do not use type SM motor oil in our old cars. The EPA
has forced the oil industry to take zinc out of oil, and that will cause wear
on cams. The diesel oils still retain zinc in their oil. They are
recommending to use Shell Rotella T, or Castrol Tection that is type SJ or any
oil that carries the type SJ specs, which contains zinc.
Comments from old LBC owners?
John Layzell
1925 Alvis 12/50
1937 Alvis Speed 25
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