You are absolutely correct Cosmo! I put Pennzoil SAE 80W-90Gl5-multipurpose gear lubricant in the transmission. What do you suggest if this is not the correct lubricant? I run 235-70-15 radial car tires on the truck since they have whitewalls. I know about you traveling long distances in your 52 or was it a 51 truck? Keep on trucking!


Green Machine