Tom
ATF deteriorates as a function of temperature. I think the safe
zone for ATF is around 200F and it will last about 100K miles in an
automatic trans, above 200F and the life of ATF drops very fast.
I'm not sure what the change interval for a T5 should be, but it
sounds like you should change the ATF in that T-Bird to see if it gets
quieter. If you change the ATF and the old stuff has a lot of particles in
it then you know there is a wear problem that needs to be addressed.
Ron Fraser
-----Original Message-----
From: owner-tigers@autox.team.net [mailto:owner-tigers@autox.team.net] On
Behalf Of Tom Witt
Sent: Monday, June 27, 2005 10:37 AM
To: tigers@autox.team.net; Frank P. Marrone
Subject: Re: not really Tiger related
Frank,
I have the T-5 in my '88 T-Bird Turbo Coupe. The manual (non-factory)
states to use ATF, but if it is noisy to use 90w. I believe it also
mentioned that it could cause hard shifting. I have the ATF in it with
149,000 miles and in neutral it sounds like I'm churning pebbles. However,
once in gear and underway it is quiet. It has been this way since I got it
at 94,000 miles. Years ago the racing Datsun 510's used a 50-50 mixture of
90w and ATF. My friend used it in his 510 starting back in the mid 70's. The
tranny is still functioning rather well (my car - now). Tom Witt
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