Page 1 of 1

differential oil type For the m20

Posted: Sun Feb 18, 2018 5:16 pm
by Swatpilot
What type and weight does everyone suggest for the differential oil type? Also I assume you will to the bottom of the top plug? The rear has multiple plugs.

Re: differential oil type For the m20

Posted: Sun Apr 01, 2018 11:03 am
by ferdockm
Swat,

My M8 Lubrication Order shows that for temps -32 to 0F, use SAE 90.

For temps 0 to 32F, use 80 wt.

For temps 32F and above use 75 wt.

I use straight 80 in all of my diffs on the M8 & M20. I then added Archoil additive because Jay Leno says it's good. Made in the US & he uses it on all of his antique vehicles.

Here's the Amazon listing:

https://www.amazon.com/gp/product/B005U ... UTF8&psc=1

Hope this helps!