ATF+4

Joined
Jul 15, 2009
Messages
54
Location
CA
Hello, did a search and no info on this Chrysler ATF. Would like to know if this is a full synthetic? It states life time fill on the back? Thanks!
 
Joined
Jul 14, 2009
Messages
1,645
Location
SF Bay Area
ATF +4 is fully synthetic. life time fill is false. All tranny oils & their addtives eventually wear out.
 

porschepilot

Thread starter
Joined
Jul 15, 2009
Messages
54
Location
CA
Thanks for the fast reply. I wounder what base stock is used in this ATF? When would one change it? I do use my Jeep as a tow vehicle and have put 35k miles on a total transmission oil change. I don't like doing the oil smell and look at the oil color check unless that's the way to go?
 
Joined
Mar 8, 2008
Messages
1,347
Location
Arizona
It is a group III. If it was mine and I was using an inexpensive +4 like ST I would flush it at 25K and sleep well at night. An inline filter of some sort would be a great investment as well. And of course.....
 
Last edited:

porschepilot

Thread starter
Joined
Jul 15, 2009
Messages
54
Location
CA
Oh thanks I'm glad to be hear! I order 6 of those blackstone kits so Ill show info on oils im using to compare. So a group III oil is highly refined petroleum from what I have been reading? Right now the oil doesn't look bad and I though a full oil change every 30k miles was a good idea also. I was thinking of running Redline c+ if it might give me longer drain intervals?
 
Joined
Jun 25, 2009
Messages
4,065
Location
Chicago, IL
I've been using ATF+4 in multiple vehicles since its inception. yup. iits a grp 3 lube. I think if you check your maintenance book it will say that "lifetime fill" does not apply to severe service - aka towing. I think they actually call for 30k replacement. also, depending which jeep & engine you have, you probably have the 45rfe tranny - which actually has two filters: one standard filter in the sump and an additional filter that filters the fluid as it returns from the cooler. that filter is a screw on (just like an oil filter) but is mounted inside the pan. you can extend the interval with Redline C+ or Amsoil ATF.
 
Joined
Nov 3, 2002
Messages
11,247
Location
PA
+4 is as good as it gets. It is indeed engineered for lifetime fill. More info here if you scroll down to the alldata thread.
 
Joined
Mar 8, 2008
Messages
1,347
Location
Arizona
Redline C+ is a great synthetic version of ATF +4. I know alot of jeep guys that swear by it. You can extend your drain intervals with the Redline C+, but don't forget the most important addition here, which would be a high quality atf filter of some sort. You can keep it simple and go with a magnefine, step up a notch and go with a Racor spin on (other spin-ons of lesser quality are also available, and there is always bypass filtration, which I am running on my vehicles. Really anything is better than what you have from the factory, which is effectively nothing. If you go with a synthetic ATF make sure to perform a cooler line flush so that you are not wasting that expensive stuff. Drain and fills take alot more fluid to accomplish a 95% or so replacement of the old atf. And to answer your question, yes Group III oils are refined petrol products. A true synthetic would be a Group IV/V which RL is. There is nothing wrong with Group III ATF's, although I have more faith in IV/V base ATF's and have had better results using them.
 
Last edited:
Joined
Feb 5, 2008
Messages
713
Location
texas
 Originally Posted By: Audi Junkie
+4 is as good as it gets. It is indeed engineered for lifetime fill. More info here if you scroll down to the alldata thread.
i agree. i changed the ATF+4 at 100K miles and it looked brand new when it was being sucked through the tube....it made me think i wasted my money for a second, but i thought it was due for a re-fresh.
 
Joined
Feb 1, 2003
Messages
8,756
Location
RI
A UOA on any fluid that looks great would be interesting. Lifetime fill is a farce. How does one define lifetime? until you trade it in?
 
Top