| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | The only way to properly clean it is to drain the oil, since one can never remove all the oil, then place it upside down do no oil can possibly drain back, flush it with acetone many times, alcohol also can be used, until no possibility of oil, then apply some kind of epoxy in several layers, it would be OK if some drained into the case, just so it could be removed. Or, one could drill it out, tap it, insert a screw and epoxy.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
| 
