.... so I tend to say don't f**k with something that's workin' ok 
SCARED....help
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SCARED....help
I planned on dropping my tranny pan today and replacing the screen and then putting on a new pan gasket and topping her off with fresh tranny fluid in the pan only. I don't want to flush out my TC or anything. My truck is running and shifting great, I've read some posts on here that say NOT to change the fluid in an older Truck and transmission (its an 82 F-150 with a C6) because it will most likely break up the particules in the TC and in the fluid and cause my tranny to then leak OR the new fluid will cause the old particles to break free and start clogging up the valves in my tranny. I want to change the screen but now I'm scared to even touch it, its perfect right now, should I just let it be?. My fluid isn't black, but it isn't nice and red either. Please respond with opinions soon cause I'm ready to do her now.
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Joined: Sep 2003
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From: NY and VA
Go for it! There is also a drain for the TC. Some also disconnect cooler line at trans to flush out the lines. (don't remember which is return line). Then while you're at it might as well adjust intermediate band.
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From: Northern California
Modification for the sake of modification, (IE replacing a external voltage regulator for no reason) is another altogether.
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I use to rebuild transmissions in the dealership In the 90's. I would definately not change the fluid especially since it hasn't been done at regular intervals. Seen to many that started shifting wierd after that,either won't downshift or problems on upshift and at different temps. If that happens you will probably have to remove the valvebody and disasemble it and clean and possibly polish the valves.
Post Fiend
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From: Northern California
I use to rebuild transmissions in the dealership In the 90's. I would definately not change the fluid especially since it hasn't been done at regular intervals. Seen to many that started shifting wierd after that,either won't downshift or problems on upshift and at different temps. If that happens you will probably have to remove the valvebody and disasemble it and clean and possibly polish the valves.
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hey
Yeah, I talked to a few local guys who gave me the same advice..LEAVE IT ALONE if everything is in working order!. ANd it is shifting perectly, I was told to maybe throw a little LUCAS tranny stabalizer in there if I wanted, but I don't even know If I'll do that, everything is A OK, I just love the truck and want the drivetrain to last as long as possible. Thanks everyone for the input!!!!
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From: Kuna ID
Thats odd, I've never had a problem after doing a filter/fluid change on an older vehicle with an auto. It was one of the first things I did when I got this truck...when it still had a C6. 5 gears are better than 3.
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From: Northern California
What happenes if the fluid hasn't been changed properly, when the new fluid is put in it, it breaks varnish and crud loose and causes problems.
If the fluid has never been changed, I wouldnt touch it unless a problem develops, but if it's had routine matinance done to it like it should, then keep changing that fluid.
My two cents.
If the fluid has never been changed, I wouldnt touch it unless a problem develops, but if it's had routine matinance done to it like it should, then keep changing that fluid.
My two cents.
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From: Virginia
I never had a problem either. If the fluid is dark, mine would shift even better after I changed it. But I have to admit, I don't mess with the fluid unless I start having tranny problems.
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Joined: Apr 2005
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From: Illinois
I agree with 81-f150-explorer,If it has been done before or regularly then it would be a good idea to change it ( But only if you know for sure) If you happen to have one that the trans. has never been serviced, The new fluid cleans so well I've seen Varnish be deposited right into the shift valves and I have had to take apart many trans. because of not shifting when cold or won't downshift when coming to a stop.Or won't take off in first gear.
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From: clementsport canada
i've always done mine. regardless of age, milage, or brand. i've killed plenty of trannys, but none were due to a fluid change
if your only changing the fluid in the pan, and not the TQ, your only getting about 40% of the oil in the tranny, and if changing that much of the fluid will cause it to gum up and stop working. maybe we shouldn't top up the auto trannies when thier low...... heck, if their that dirty, how long is it going to last anyway???
if your only changing the fluid in the pan, and not the TQ, your only getting about 40% of the oil in the tranny, and if changing that much of the fluid will cause it to gum up and stop working. maybe we shouldn't top up the auto trannies when thier low...... heck, if their that dirty, how long is it going to last anyway???
Post Fiend
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From: Northern California
It's a catch 22. Danged if you do, danged if you dont.
I've seen places like Jiffy Lube offer Transmission "flushes". Perhaps that would be an option?