June 07, 2020, 04:56 PM
J AllenFord duallie posi additive
Changing the gear lube in a 2001 F-350. Going with 75-140 synthetic gear oil. What additive should I use for the posi?
June 07, 2020, 09:51 PM
TD3550I have only used the Motorcraft XL-3 in the 350 and the 450. Where you going this year with 66 closed?
June 08, 2020, 03:35 PM
J AllenThanks. Will go to Byron & 41 & maybe a few other tracks.