DIY: Transmission Oil Change

Skyscraper · 10-19-2014, 05:39 PM

Pumped the 3 quarts of mt 85 in the tranny just now, emptied all three without any oil spilling out through the fill hole. Anyone else get three in with no overflow? What gives?

N8GTOL · 10-19-2014, 06:12 PM

Quote:

Originally Posted by Skyscraper

Pumped the 3 quarts of mt 85 in the tranny just now, emptied all three without any oil spilling out through the fill hole. Anyone else get three in with no overflow? What gives?

I bought 4 qts when I did mine a few weeks ago because I have read others on here running just short with 3 quarts. I only used 1/4 of the 4th bottle but I over pumped and let it drain back out to make sure it was full so probably only an 1/8th of the 4th quart was needed to get it to come out the fill hole. If you want to get another quart to top it off it is probably ok to drive with the three quarts you put in for now. Try and stick your finger into the fill hole and make sure you can feel the top of the oil level.

dkmura · 10-20-2014, 08:53 AM

Quote:

Originally Posted by Skyscraper

Pumped the 3 quarts of mt 85 in the tranny just now, emptied all three without any oil spilling out through the fill hole. Anyone else get three in with no overflow? What gives?

Most likely explanation is your car is not perfectly level. Whether it's how you jacked it up and supported it on four jackstands, or the floor or driveway you're using slants sideways slightly, it can throw the fill line off. In any case, you don't want to overfill your tranny, so three quarts should be plenty.

JARblue · 10-20-2014, 09:23 AM

Quote:

Originally Posted by dkmura

Most likely explanation is your car is not perfectly level. Whether it's how you jacked it up and supported it on four jackstands, or the floor or driveway you're using slants sideways slightly, it can throw the fill line off. In any case, you don't want to overfill your tranny, so three quarts should be plenty.

I jack my car up perfectly level (within 0.01% slope, checked with a properly calibrated 4' digital level - I have to use different size jack stands to get it perfect in my garage) and refilling the transmission with exactly 3 quarts of fluid never causes overflow. You can't overfill it because the fluid will just pour out the fill plug when it's full. IMO it is better to pump enough fluid in there to make it overflow than to leave it short. However, if you can feel the fluid level when you stick your finger in the fill hole, it should be fine even if you only used 3 quarts.

onzedge · 10-20-2014, 09:26 AM

Quote:

Originally Posted by JARblue

I jack my car up perfectly level (within 0.01% slope, checked with a properly calibrated 4' digital level - I have to use different size jack stands to get it perfect in my garage) and refilling the transmission with exactly 3 quarts of fluid never causes overflow. You can't overfill it because the fluid will just pour out the fill plug when it's full. IMO it is better to pump enough fluid in there to make it overflow than to leave it short. However, if you can feel the fluid level when you stick your finger in the fill hole, it should be fine even if you only used 3 quarts.

10-19-2014, 05:39 PM	#1 (permalink)
Skyscraper Base Member Join Date: Jun 2014 Location: The skies above NorCal Posts: 72 Drives: 09 Touring Sport 6mt Rep Power: 12	Pumped the 3 quarts of mt 85 in the tranny just now, emptied all three without any oil spilling out through the fill hole. Anyone else get three in with no overflow? What gives? onzedge likes this.

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