trans and ford 9 oils?

[Duckhnter83]

What oil is everyone running in there sag/muncie 3 speeds? Any additives? And what's everyone running in there 9" rears? Any additives for the spools??

[racincowboy3]

Run Amsoil severe gear lube in the rearend... nothing else...

[Duckhnter83]

What weight 75-90? 75-110? 75-140? I assume no additives are needed for a spool?

[racincowboy3]

No additives are needed. especially with that oil. I run the 90 in my cars and we even run it in sprint cars with great results

[stockcar5]

dexron 6 in the trans and royal purple 75-90 in the rear end.

[Duckhnter83]

Why dextron6 you would think auto trans fluid would just burn up the manual trans? I would think to use the same 75 -90 as the rear.

[stockcar5]

Why dextron6 you would think auto trans fluid would just burn up the manual trans? I would think to use the same 75 -90 as the rear.

nope, many manuals now come factory with some form of atf. I believe some aftermarket trannys also call for atf.