Follow the maintenance schedule prescribed for the vehicle application irt the transmission. If the car is stock, barring any detected issues leave the transmission alone hence no drain plug. Most THM applications are light duty passenger trucks and cars. Likewise vehicle model and application influence maintenance and this normally applies to 1ton + trucks. If you have increased the power plant output significantly beyond the nominal average power range of the transmission then additional matenance considerations should be made. Otherwise the newer THM generation (circ mid 90s) transmissions are designed for high milage, low wear to the point that fluid and filter changes are not necessary. Don't change the transmission fluid unless there is an issue discovered like a leak, burnt fluid and the like. Typical end result of clutch and thrust washer wear.īottom line, if the transmission works as is, other than a leak, changing the filter and gasket isn’t going to cause problems.įrom the lead GM Turbo Hydromatic engineer I bought my 4L80e from. People always ask how many transmissions have been installed in the truck, I reply with my usual smart ass answer “including the factory transmission? Just one.” Even with some performance upgrades, there is never more than a very slight amount of debris. My 06 Ram Diesel has 200k, I changed the fluid and filter and adjust the bands once a year. Transmission filter/fluid change is best thought of as maintenance. If changing the filter fixes anything, the transmission was on borrowed time anyway. If it ain’t broke, don’t fix it!!! Good idea, leave the hood closed until the engine won’t run, then do the long overdue maintenance!!!Ĭhanging the fluid or filter should never be considered a repair. New fluid will cause leaks!!! Why doesn’t that happen after oil changes? If there is so much crud hiding in crevices that the new fluid loosened them up, you had problems LONG ago!! The detergents in new fluid will loosen up deposits. (The friction material is SUPPOSED to be on the clutches a d bands, not in the fluid!!) The transmission needs the grit so things won’t slip.
#4l60e transmission fluid free#
Feel free to pick one, or add to the list. When the transmission completely fails a few weeks later it’s obviously because of the new fluid and filter. Then pours a couple quarts of fresh fluid, diluting it with 7 quarts of nasty burnt fluid. Guy figures “hey, I haven’t ever changed the fluid or filter” so proceeds to change a filter clogged with clutch and band debris. It either slipped, delayed engagement, or some other concern. I bet the myth started with someone who had a transmission that wasn’t performing as expected. It REALLY like to know how the myth got started!! That is one of the oldest and most stupid myths I have ever heard. What does this line of thinking recommend refilling the trans with the contents of the catch pan?Īnyhow juuuuuuust asking in case I missed some secret tranny (heh heh I said "tranny") dark magic to prolong the transmission life? Plus it is an 11 quart system anyway on the 4L60E and the torque converter has no drain provisions anyway so will only lose 5 quarts anyway putting a new filter & gaskets in it. I told him it definitely needs a pan gasket or dipstick O-ring (changing fluid on its own! Lol). SHE INSISTED I not do the job so called up the local service manager and the guy tells me "an old timer had told him never to change the transmission fluid unless you wanted problems,which he did in his car anyway and it screwed it up so he wouldn't recommend it". (with her smiling ear to ear in dove leather passenger seat : ) and then dry-rited the transmission fluid leak. I installed a new battery in her car yesterday,topped off the leaking transmission (3 1/2 quarts) test drove it Well, she is sharp as a tack, takes ZERO meds & can walk circles around me at grocery store lol Just using it for grocery store runs (after Covid of course) and the all important hair dresser. So our 97 year old Mom is ringing my phone off the hook to get her 92 Roadmaster back on the road safely (ummm lil contradictory? 97 year old driving a car safely? Lol).
0 kommentar(er)
