C6 tranny fluid replacement
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Fleet Mechanic
Joined: Feb 2003
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C6 tranny fluid replacement
89 F250 "Heavy duty" with C6. Sometimes towes 9,000 lbs.
The last owner told me I had another 15K miles to go until tranny service was needed, but I want to do one of these partial fluid replacements (vs. a full flush) That is, drop the pan, replace the lost fluid and the filter. I want to examine the pan.
Now, what's the best synthetic fluid to use for heavy-duty towing? Filter? I want to mix the synthetic with what's already there, as far as I understand, that won't cause any problems. Because that's what synthetic blend is anyway.
My second question is, where can I get a pan which is like the oil pan - loosen the bolt and the fluid comes out, instead of undoing 16 bolts with RTV. I could repeat that process 3-4 times with the effect of a professional flush.
The last owner told me I had another 15K miles to go until tranny service was needed, but I want to do one of these partial fluid replacements (vs. a full flush) That is, drop the pan, replace the lost fluid and the filter. I want to examine the pan.
Now, what's the best synthetic fluid to use for heavy-duty towing? Filter? I want to mix the synthetic with what's already there, as far as I understand, that won't cause any problems. Because that's what synthetic blend is anyway.
My second question is, where can I get a pan which is like the oil pan - loosen the bolt and the fluid comes out, instead of undoing 16 bolts with RTV. I could repeat that process 3-4 times with the effect of a professional flush.
