The Red Line Gear oils are several different ones
Red Line MTL is a 75/80 gear oil. This is designed for a manual
transmission that requires 30 wt oils.
Red Line 90wt gear oils are designed for transmissions and rear axle
units that require a 90 wt gear oil, This will also vary if you have
a limit slip rear axle.
Also gear oils do not have the same viscocity ratings as engine oils
so a 75/80 gear oil is the same as a 30 wt engine oil. The British
transmissions that did not have a syncro first gear did not use a
90wt gear oil that all required a 30wt non detergent engine oil.
David Nock
British Car Specialists
Stockton Ca 95205
209-948-8767
www.britishcarspecialists.com
..
..
On Jul 28, 2009, at 10:21 AM, writeian@aol.com wrote:
> I made a mistake reporting the fluid-oil my friend had used in the
> gearbox of his '60 BN7 who experienced a gearbox failure requiring
> replacement.? He had been using Redline 75W90NS whether that is the
> MT or MTL fluid-oil.
>
> I use?SAE 30 non-detergent oil in my '60 3000 gearbox and its
> overdrive and will probably not ever use anything else, period.
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