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post #16 of (permalink) Old 04-15-2019
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It’s my experience when people change transmission fluid and filter and then the transmission fails shortly after. That transmission already had wear problems and the dirty trans fluid was actually keeping the transmission from slipping. I always change trans fluid and filter in every used vehicle I buy and never had a problem. What I also do is only change as much fluid as exits when I drop the pan to change filter. Usually about 4-5 qts with a small block V-8.
I also always add Lucas transmission additive when adding fluid. I have a 93’ GMC k-1500 5.7tbi I’ve owned for 18 years and has 264,xxx miles. It has the original 4L60E that’s never been touched besides a few filters and adding Lucas, It’s still going strong.
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