Dexron is fine (and most likely that's what they put in it). No way should it have an adverse effect on the transmission's shifting characteristics though. Did they check the "kickdown" linkage adjustment? Did they adjust the bands, - or just change the fluid & filter? There is a difference between a "transmision service" and a fluid & filter change. Does the trans slip under FULL throttle acceleration? Regards, DaveG. ----- Original Message ----- From: "c.wilhelm" <ldangel987@xxxxxxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Monday, July 19, 2004 2:24 PM Subject: IML: 67' Transmission Fluid & Slippage I just have a quick question(s).... What is the recommended transmission fluid for my 67'? (I only found notes on a '58 in the archives). Recently I had my transmission filter changed, and now I have noticed some slight slippage under harder acceleration? I am assuming it's the fluid, as I never had slip before...? Thanks, c.