Steve, if it is a T-5 trans, Ford recommends ATF. Why not go with this
recommendation.
Larry
SJC Worldwide wrote:
>
> Hello Everyone:
> My new hi-po 289 and 5 speed are installed in my Tiger. (Haven't started
> it up yet, though). A questions has come up. The shop that built the
> transmission for me recommends straight 30 weight oil in the gear box.
> The shop that's done the installation recommends ATF (automatic
> transmission fluid) and in fact has already filled it with this. Who's
> right, or is there a definitive answer? My mechanics (who build and have
> run NASCAR cars for years, and do some awesome hot rod cars and have
> done a good number of Tigers through the years) say durability is no
> worse and that shifting is easier with ATF. They say the only reason to
> use 30 weight is if the transmission is noisier than I like. Any ideas
> out there on this?
>
> I'll probably pick up the Tiger on Friday or so. I'll give a full report
> on the conversion later next week after I get some miles on the car.
> I've had a few functional custom things done to it that I'm interested
> in seeing if they work, as I hope they will, mostly in the cooling
> department.
>
> Steve Sage
> 1967 Tiger
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