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For all of you still using engine oil in your Triumph or MG gearboxes:
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And, by the way, when=E2=80=99s the last time it=E2=80=99s been changed?=
=E2=80=9CDirt is the enemy of all machinery=E2=80=9D
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Ed Woods
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People confuse engine oil weights with gear oil weights. They have > =
nothing to do with each other. A 75w gear oil has about the same viscosity =
> {pourability} as 20w engine oil. Back in the days when your cars were =
new oil technology expecially gear oil was rather crude. 30w engine oil was=
used because they did not have a gear oil that was thin enough. Ligh=
t weight gear oils are fairly new. The last 15 years or so. Gear oils=
are designed for shear stregnth. Meaning they cling to virtical surfaces. =
Engine oil does not. By using straight weight engine oils you are using anc=
ient technology. It would be the same as putting on rayon/nylon tires, usin=
g poor fuel etc. We use 75w/80 gear oil in all but our racing boxes. These =
use a 75w synthetic oil. One of the boxes, a pre-war jag box had over 30,00=
0 miles of rallies on it before it broke a gear tooth. There was no evidenc=
e of abnormal brass wear on the syncros. I have never had an oil engineer i=
n 25+ years of business tell me that hypoid oil attacks brass. The light we=
ight gear oils shift better and protect your gears better than any engine o=
il.=20
<br>Ralph Steinberg
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