Transmission Oil Pan Drain Plug

[VenCountyQ]

I have a 94Q and will be replacing the automatic transmission fluid. When removing the transmission oil pan drain plug, do I need a replacement copper washer or similar before re-installing?If so, what size/part#.

Thanks

[elwesso]

To be honest..... The best thing to do is take it to have a machine flush..... You can get this done at about any independent shop or at a reputable lube place (not my first choice, but maybe you know someone really good)..... It gets out all the old crap.....

Along with that you'll want to replace the filter, and clean out the pan.......

Information on all of this can be found by using the "Search" button at the top......

And, welcome to NICO, and enjoy your Q...... Post some pictures, if youd like.... I have a 94 Q also!!

[maxnix]

I have a 94Q and will be replacing the automatic transmission fluid. When removing the transmission oil pan drain plug, do I need a replacement copper washer or similar before re-installing?If so, what size/part#.Thanks

Look at http://www.infinitipartsusa.com for the kit. The bolts are one time use stretch, so they must be replaced, as well as the gasket.

You are doing a pan drop and screen replacement with your fluid exchange, right?

[Q451990]

The pan plug uses the same crush washer as your oil drain plug. Check the previous posts out with the "search" feature on transmission flushes. The general consensus is that a flush with Mobil 1, followed by a pan drop and filter/o-ring change, is the best plan. You may need to do the pan drop first if the filter is already badly plugged.

The auxilary transmission cooler adds more protection, but may not be as necessary on the 94+ Qs depending on your location. Welcome to NICO!

Heath

[fxjackso]

And about that crush washer. It's just a little thing, but if you use a new one-NO LEAKS. If you use anything else- maybe you will be OK. But, maybe you will end up taking out the drain plug and replacing the other washer after the drip drives you crazy!Buy a dozen from Joe!

[VenCountyQ]

Thanks all for the info. I already had the transmission fluid draining overnight in the driveway, so I will have to do the flush next time. I did replace the gasket, filter/strainer and o-ring. I managed to get 7 1/2 quarts out and replaced with Mobil 1 ATF. Given my car has 140,000 miles and the last time the transmisssion fluid was changed was at 75,000 miles I was expecting to find some nasty stuff in the pan, but it was incredibly clean.

I was thinking it shouldn't be too tough to construct one's own flush machine. 1 five gallon bucket with tight fitting lid, 2 bladders, some hoses and a bypass valve. Drill some holes in bucket for hoses, fill one bladder with new fluid, place both bladders in bucket, fill bucket with water to remove any remaining air and secure lid. Now simply hook into transmission cooler line with bypass valve, start engine and switch valve when ready. The old fluid will flow into the second bladder and push an equal amount of new fluid out and back into the system. I'm probably missing something, but with a home built flush machine and a good source to buy Mobil 1 ATF in bulk we could get the cost for a flush down under $50

[firstq]

It is an interesting thought - the only reason I have not tried something similar is the fear of shooting down the transmission...perhaps if any one thing went wrong.

I have read in other boards that this indeed can be a DIY type setup (similar to what you are describing) - if I remember correctly, I read about this on a SAAB board somewhere on the net.

Would be interesting to see a visual diagram of the proposed setup.

[maxnix]

VenCountyQ, what year is your Q45? This might show the later (1994-1996) Q45 do benefit from the revised ATF heat exchanger.__________________Brian1995 Q45 & Q45t

Discover the power of the button!

[elwesso]

Its a 94....... That means I might have another 30k on my transmission, since it has been flushed a few times!!!