Jean-Marc,
If it was a mistake, it was one that was repeated time and time again! While
early Triumphs (TR2, 3, 4, etc.) did recommend running
engine oil in the transmissions, I don't it holds true of Spitfires.
Down here in Arizona, 80-90 wt gear oil flows like water!!!
Joe
JM Dion wrote:
>
> Did anyone hear that SAE 80w90 is too heavy for a Triumph Tranny and
> could cause early failure ? A local English parts dealer told me that
> there is a mistake in the books who recommand SAE 90 (but I have never
> seen anything else). He suggested to use regular engine oil like 20W50.
>
> Thanks
>
> Jean-Marc Dion
> MKII 1967
> Quebec, CDN
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