type???trans fluid 460E

[Ken Glowacky]

I bought a LS1/460E motor trans package from a 98 trans am. Getting ready to add trans fluid after a filter change and don't know what to put in it(don't know what is in it. Parts house says non synthic????(sp) How do I know what is in it and can you mix them. What does GM call for??? I am going with Mobil 1 in the motor. Thanks

[performabuilt]

Factory would have been dexron/mercron or equivalant non synthetic,

[Orcus79]

Anytrand fluid that is dextron/mercon based and no you can not mix them.

[sroach20]

dont bother with synthetic in your tranny. they say synthetic keeps the temps down, most people have an external cooler for that.