URGENT HELP NEEDED Transmission Problem!

[crashmctavish]

For the record:
LSD Diff oil contains suphur & Phosphrous
EP Oils contain Arsenic
Engine oils contain none of the above.
Consult your tribologist !
Diff Oil Castrol LS90 or equivalent
Gearbox Any EP90

[AllthingsZagato]

crash is right, Mobil one engine oil is way way too thin for use in a gearbox. Any engine oil for that matter is too thin and cannot cope with the loads between the teeth of the gears and else where in a gearbox

[crashmctavish]

Yup EP Oil additives contaminate the open grain surface of the steel to prevent pressure welding on the teeth which pulls small lumps out.
LSD's require a grip but slip additive.
Engine oils require antioxidants detergents PTFE etc etc

[papajam]

Quote:

Originally Posted by AllthingsZagato Any engine oil for that matter is too thin and cannot cope with the loads between the teeth of the gears and else where in a gearbox

[crashmctavish]

Hi Jim the viscosity is right but it lacks the EP additives. By the way I really rate your contributions to this site. Craigs list, yourself & Akitaman are top notch.

[Peterv31]

You have found one of the shift fork bolts and lock tabs.
trans is stuck in gear (4th) and when you shift to another gear this puts trans into 2 gears at once and it locks up.
to fix this remove trans, disassemble, replace all the shift fork bolts and loctite them when reassembling. watch out for the interlock pins if you remove shift rods

Pete in Va

[ddouglas77]

Quote:

Originally Posted by Peterv31 You have found one of the shift fork bolts and lock tabs. trans is stuck in gear (4th) and when you shift to another gear this puts trans into 2 gears at once and it locks up. to fix this remove trans, disassemble, replace all the shift fork bolts and loctite them when reassembling. watch out for the interlock pins if you remove shift rods Pete in Va