Volvo 850 Transmission oil

Brandon · Post by **Brandon** » 11 Apr 2005, 21:17

is it true that I should not change my transmission oil since my volv0 850 milage is 225k miles? My local mechanic said that I could do more damage to it than good.

White850Turbo · Post by **White850Turbo** » 12 Apr 2005, 06:11

It's tough to say. Is that 225k miles on the original transmission? I changed the transmission fluid on my car at 105k and my transmission went out at 108k. Coincidence? Maybe... maybe not. The reasoning behind this statement made by many mechanics is that over time, a lot of gunk can get built up in the crevices of the transmission. By flushing it, you're flushing a lot of that junk out thus causing slippage or other abnormal behavior. So, I couldn't really tell ya either way. Some mechanics will tell you that it's not going to hurt anything and others will tell you not do it. It's kinda one of those unsolved mystery things. Anyways... If you've managed to get 225k out of that transmission, I see no reason to mess with a good thing.

turbotim2 · Post by **turbotim2** » 12 Apr 2005, 06:48

You should really only need to change it if it is discolored (brown rather than red) or if it smells burnt. I changed out mine at about 110,000 because it was brown and didn't smell quite right. I have had no problems since. I did not have it flushed, I did it the old fashioned way, and Volvo makes that easy by having a drain plug in the transmission pan. I would check the dipstick look closely at the fluid and smell it and then make the determination.

Jot · Post by **Jot** » 12 Apr 2005, 08:54

How about a drain and fill it is about a third of the transmissions contents. It won't be a complete cleaning of the tranny but shouldn't hurt.

turbotim2 · Post by **turbotim2** » 12 Apr 2005, 09:14

You actually can get most of it out by going through the process 2 or 3 times and run the torque converter out. It is not as easy as the pump out but its a lot cheaper.

steve · Post by **steve** » 12 Apr 2005, 18:47

Change it!!!!!!

Post by **tina** » 14 Apr 2005, 16:15

I had the transmission flushed and filled on my 1994 840 at about 210,000 miles and it was a good thing - smoothed out shifting a bit and the transmission is still going great at 237,000 miles.

Too bad I blew a valve in the engine

KLS · Post by **KLS** » 15 Apr 2005, 13:49

I bought Auto-Rx to clean my transmission before I flushed the fluid. It worked very well for me. I recommend both the cleaning and the flush. Do the same for your power steering.

Ken

Jaxx · Post by **Jaxx** » 15 Apr 2005, 15:07

see if your tranny's oil has little bits of metal in it, if it does DO NOT CHANGE IT!!! OR YOUR TRANNY WILL FAIL right then. be ready for it to fail soon though.

I need to flush/change mine very soon. 160k, and not counting, the odometer stopped LOL, so i think i have around 170-75

-jaxx

Luther White · Post by **Luther White** » 17 Apr 2005, 08:51

Took my 94 850T with 145,000 about a month ago to the dealer to have it flushed, the fluid was a little brown and burnt smelling. Have not had any problems to date. Knock on wood.