00Dog

I switched out my Amsoil ATF+4 today for Valvoline. The shifting difference is night and day. It shifts like a BMW again. I still have the Amsoil in the transfer and diffs but my tranny didn't like it.

ripping r

I run the napa atf+4. i think amsoil is overrated and over priced. I think the napa stuff is Valvoline just in a napa bottle.

SpeedyWS6

Shifts like a BMW or like a Mercedes?

00Dog

Ok you're right. I've only had a Mercedes with an auto... until now.

rockcrawler304

I just run the Mopar ATF+4 and have since new. No issues so far. I may try Valvoline next just to compare.

SundayMoney

I had the same experience with Amsoil. My truck doesn't shift worth a darn when its cold. I tried Amsoil to see if that would help. If anything it got worse. Back to Valvoline ATF+4.

If its going to be hard to shift either way,I may as well use the less expensive fluid.

LOWTYD

Do you guys feel a noticeable difference once you change out the stock fluid. I have about 170,000 on the stock fluid. I bought everything to change it out, but once I checked it, it looked fine, so I put it off for a while. Plus, its a PITA to get to the fill plug around the exhaust pipe.

soulezoo

Hmmm....

If it shifts like my Mercedes, then I'll stay with the amsoil!

SundayMoney

Buy one of the pumps that fit gallon jugs,and pump the fluid into the tranny.

I use an old washer fluid jug I saved.

The service interval is 60K IIRC. I'd be changing the fluid out regardless of whether it'll shift better.

sdaly

I've used Mopar ATF+4, Castrol ATF+4, and Redline C+ ATF in my G56. The Castrol ATF+4 has been the best in my experience, and it's also the least expensive, and widely available. The Mopar ATF+4 looked pretty done when I'd change it--a dark brownish-red. But the Castrol under the same conditions always drains out looking bright red, like new.

I had to cut down the hex socket to remove my fill plug so it would clear the exhaust pipe, otherwise it's pretty easy to remove. Then I use one of those flexible fill hoses that screws onto a quart oil bottle to fill 'er back up. I jack up the right side of the truck a bit and fill it until it's dribbling back out, then button it back up.

LOWTYD

Sounds good! I think I'll try jacking up the right side like you said, just to get a little extra in. I think that would be easier than taking the boot off.