Transmission fluid

I don't think over sized tires will have any detrimental impact on the tranny. On a leveled truck I think it might make a couple of oz's difference.

 

This guy is a hack that's selling transmission fluid. Do not believe every video you see on YouTube. DO NOT DO THIS!

His method of getting the "majority of the fluid out" is to run the transmission dry. Then, he runs the transmission without fluid while he adds until it runs out the level check port.

 

Has anyone used a funnel with a piece of tubing to fill the tranny? I tried on a Tacoma but did not have a long enough tube. I have a pump but figure if I could use a funnel it would be easier.

 

Usually how it's done with the 5.7L, through the engine compartment. It depends on location of the fill port. The 4.6L with the tail shaft (2WD) or rear port will be very hard to fill with a funnel.

 

I ran a long tube out the fenderwell to do the fluid. What a pain in the ass. I bought a pump for next time

 

After all this transmission fluid cooler talk and fluid changing talk, I think I'm going to invent a Tundra 5.7L ATF changer, and sell it on Tundras.com.

It would be located near the power brake booster. It would consist of two graduated polyethylene containers (3+ gallons each). One container would be for fresh ATF, with an orificed or adjustable valve tube to feed fresh fluid into the transmission, either through the auxiliary cooler outlet line back to transmission, OR, into the fill port if the return line doesn't flow fast enough.

The second "catch" container would be for the dirty fluid, with a tube from the auxiliary cooler supply line. You would fill the fresh ATF container, and start the engine to pump the old fluid into "catch" container. When the fresh container is empty, and the "catch" container is filled, turn off the engine and reconnect the cooler lines. Done. Safely. As often as you want.

Needs a little development work for gravity feeding fresh fluid at the same rate as the pumped fluid.

 

I was also looking into doing this on my 2014 Tundra. It has just under 100k miles on the truck and as far as I know the fluid has never been changed. I did check out some videos on Youtube and it doesn't really look that difficult to do. The last one I watched the guy replaced what he took out with 6 quarts of new fluid. It seems that by the video, after the transmission is up to temp you remove the overflow ( I think that's what he called it) plug and drain some of it out to know that it has the correct amount.

 

Bought my Tundra with 98K miles and flushed the trans, plus installed a new filter. That was 3 years and 10K miles ago. No problems.

 

Just did this on my 17, 75,000, fluid seems pretty good little discolored but smelled ok.
I went ahead and did 3 gal, using the cooler hose hook up, went just fine, fluid actually came out slower than I expected, hardest part popping off the front grill,
I used a long enough hose off the cooler so I could rest a jug on the running board and watch how full it was getting, no helper needed,
End of the day, drained a bit over a gal. From the pan, added a gal, run it to fill up the empty, add another gal, fill the empty, add the final jug, close it up, run it to temp and check level, easy enough.