Michael,
Given the propensity that these cars have for leaking oil, I would say that
using a synthetic is for the rich man's car! :)
I just prefer to let the nonsynthetic leak out and top up - sort of an
ongoing oil change!
Keith Pennell
> For temperatures above 41 degrees F.
> For the 100 the recommended engine oil was 30 weight (They didn't have
much
> in the way of multigrade oils back then) this continued through the 100/6.
> The first of the 3000s were meant to use 10W 30 or 20W 30 (The first of
the
> viscosity modified oils were coming onto the market)
> The 3000 MkIII handbook recommends 20W 40 or 20W 50.
> If the cars were made today I would think that 20W 50 synthetic would be
the
> recommendation.
> I use Valvoline 20W 50 Synthetic Racing Oil which, this summer after all
the
> oil drained out of a split pan, managed to provide sufficient lubrication
to
> have the engine survive 7 miles at race speeds with very little damage to
> the bearings.
>
> Michael Salter
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