Re: to canada and beyond!

Interesting - in aviation 120 is often interchanged with 25w60 and
100 with 20w50.

Mike L
60A,67E,59Bug

----- Original Message -----
From Trevor Boicey <tboicey at brit.ca>
>
>   I might be reading between the line shere, but it's
> worth mentioning that 80w90 gear oil and 20w50 engine oil
> are roughly the same viscosity despite the numbers being
> very far apart.
>
>   Engine oil viscosity is measured at a hotter temperature
> than gear oil, which makes the numbers much lower even for
> the same thickness of oil.
>
> --