[AT] 90wt oil and fords

[Chris Britton]

The reason that oil is marked for fords is because it is a gl1 or gl3 oil.. 
and not a gl4 or gl5 oil.. Most gl4/5 oils are not yellow metal safe.

Fords from 39-52 had an open sump setup.. so hyds shared the gear oil.. a 
huge component of the hydro pump is yellow metal.. thus the need for a lube 
that does not attack it..

My local tsc sells the 90wt/ford oil.. plus a 90wt gl1.. walmart sells a 
90wt gl1 ( in some areas )  Napa can order 90wt gl1 as part number 65-205 5g 
pail ).. There are also a few people who make a 80w90 product that is yellow 
metal safe.. penzoil gearplus lubes, as well as a castrol product.

Soundguy

>From: Mike Sloane <mikesloane at verizon.net>
>Subject: Re: [AT] Transmission oil, 90-wt?
>This is probably "antique tractor heresy", but my opinion is that, as
>long as it is vaguely slippery, whatever you put in your tractor's
>transmission will be fine. 1. The quality of today's lubricants is so
>far advanced from what they sold in the 1940s and '50s that those old
>specifications aren't really that important (as long as the approximate
>viscosity is similar). 2. Very few of us operate our antiques anywhere
>near as hard or long as they were designed for, so that the stress on
>the components is minimal.