There's just one of the websites that list Special Lubricant Fluid for my transmision (my car's a 1998, so apparently I should use SLF) I don't want any preformance stuff that will give me 1/16th of a HP, I want longevity.
My tranny's acting all funky and I figure, why not try to change the fluid myself, and if I see pieces of metal on the magnet on the large pan, I'll drop the tranny and get it repaired by a transmission specialist. I know my transmission has already been cracked open because the bolts that mate it to the engine output shaft are anodized, they look NOWHERE NEAR stock... I suspect they put the wrong fluid in or the level is just low, or maybe I have a very very slow leak somewhere because it's shifting weird and just does NOT feel right. Hopefully it's just hydraulics and not a stripped gear, which could also very well be the problem.
Does anyone know the correct fluid to put in there? I'm getting the transmission service kit from pelican parts which includes the 2 gaskets and a filter, and I need to know the right fluid to do this. If it is indeed SLF, where the hell would I get that other than the dealer, or should I just suck it up and go there?
Originally posted by Fruityone@Nov 23 2004, 08:29 PM wont matter you can never completely drain an auto trans because fluid hides in the torque converter
Wrong. Gear lube is used to lube the gears, a viscious fluid is used in the torque converter to transfer torque to the driveline without any metal to metal contact at all.
My trans is shifting hard. Smetimes when I'm accelerating moderately, it shifts while the RPM's are still high so it sorta slams into gear and the rpms go way down, way up and back to where they should be ("way" meaning around 400 rpm of a difference). Sometimes it's got this slipping "thunk thunk............" feeling when I'm just driving along on the highway in 4th gear with the torque converter clamshells locked together and I feel a THUNK THUNK or 3 and an associated instentanious loss of power during those thunks, telling me that SOMETHING is slipping, either the locking mechanism on the torque converter is going nuts or a gear in my transmission (probably the planitary gear since it's happened in 4th gear and 1st gear when starting off the line about 3 months ago) is torn and is poping out of place every once and a while.
Let me add that when I was under my car while it was on a lift about a year ago when I was getting the A\C fixed, the bolts that hold the transmission to the engine block were anodized. BMW dosn't used anodized bolts as far as I know and they definately wern't stock since they didn't have much road grime on them. (I had my car roughly 8-10 months before that point) So, my transmission had obviously been worked on before and non-OEM bolts were used. What I'm hoping is they put the wrong fluid in and the transmission just isn't working 100% correctly because of that. If that's not the case and a few gear teeth actually are stripped, then shit, at least I'll know because of the large collection maginet in the large fluid sump pan.
I'm definately going to change the fluid, at least to just crack the sump open and see if there's any metal shavings on the maginet or at the bottom, I just need to know what kind of fluid to put back in once I'm done.
Please read my origional post. I know you put "Automatic Transmission Fluid" into my tranny, but what KIND of ATF... there's a bunch according to BMW.
no automatic transmissions dont use gear lube...hell my 5 speed doesnt even use gear lube. well as far as the brand/kind of atf i recommend i would say either Lubro Moly...or i believe Redline makes atf as well. other than that i have no experience with atf
edit: wrong fluid wont make the car act that way...however if they didnt put enough in then it would act that way.
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