Re: Differential Lube...Ever use heavy weight? |
Subject: Re: Differential Lube...Ever use heavy weight? by Trae1976 on 2011/8/12 13:08:04 Concerning the additive ... I don't know if GM has discontinued it, but it appears the parts suppliers still carry it. Zip has it for $12.95/bottle, part number POSI. Quote: flyboy wrote: Well maybe Andy is 89Vette's local mechanic. |