I was wondering if anyone was using this stuff in their 48re trannies. I have heard nothing but good things about it. Less heat, smoother shifts, etc...It does say on the bottle atf+4 so I believe it meets chrysler specs. I have an 06 mega and I am doing amsoil throughout. I just hit 10,000 miles and have driven cross country so I am pretty sure its safe to switch to synthetics. I will be using there new 5w40 low ash oil with an amsoil oil filter. Sorry i went off course , but I am curious if anyone is or has used there ATF in the 48re. Thanks!

 

It works fine for me, I started usuing it about 10k miles ago(75k on the odometer) and haven't had any issues as of yet. I didn't have any gauges before I switched to the Amsoil so I can't say if it runs cooler or not.

Im not exactly sure but I hear its best to wait a while before using thier oil in the engine, 10k miles isn't quite broken in yet.

 

I have heard you should wait till 20,000 but I do have 10,000 hard miles so i'm gonna take a shot. If the piston rings aren't fully set, I heard it will just take longer for them to seat. I hope you can't damage anything but it's a cummins right? Thanks for the reply

 

Well Cummins or not, their are certin elements to take into consideration still. Im sure you will be fine with what ever you choose. Parts can still wear down prematurely. Someone else can probley chime their 2 cents in about this also.

Would this be your first oil change in 10k miles?

 

No, I changed the oil at 1000 and then at 5000. This will be my third oil change. I actually asked the diesel tech at my dealership who told me it would be ok to go synthetic after 5000mi. As for wearing down parts, I thought the amsoil would better protect all the internals in the cummins? I have read that it will just take a little longer to seat the rings(if there not already seated) than usual. But I never heard of any damage being done. I am also comforted by what the tech said. He is outstanding when it comes to diesels.

 

If you towed/hauled some heavy weight for most of the 10,000 miles you have on it then you should be Ok to switch. Some have done it sooner and have had no problems. I know Cummins will say 20,000, but if you have run it hard with a big load for 7-8,000 miles you should be OK to make the change.

My self I used Rotella 5w40 this time as I was not sure if mine was broke-in well enough at 10,500 miles as I needed a winter weight oil. By this summer I hope to have enough miles so that i can install Amsoil 5w for year round use and not worry.

 

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Can I use synthetic oil?


Synthetic oils can be used in all Cummins engines, beginning with your second oil change, as long as they meet Cummins guidelines. The only time Cummins recommends not using synthetic oil is during the engine break-in period on a new or newly rebuilt engine. For the first oil change in a new or newly rebuilt engine, Cummins recommends the use of a petroleum-based oil. Cummins recommends that you use a quality multi-viscosity oil that meets or exceeds Cummins Engineering Standard (CES) 20071, 20072 or API CH-4 specification, like Valvoline's® Premium Blue® and Premium Blue® 2000. API CG-4 or CF-4 oils are also allowed at reduced oil drain intervals. In addition to the above requirements, Cummins B and C Series engines are equipped with sliding cam tappets which require lubricants meeting category SG, SH or SJ for superior protection of the sliding followers when CG-4 or CF-4 oils are used. For regions where oils meeting the above specifications are not readily available, select a lubricant which meets CES 20075 for use in Cummins B and C Series engines. Choosing the proper lubricant for your application will maximize your drain interval and extend the life of your engine. Consult your Operations and Maintenance Manual for drain interval guidelines appropriate for your specific application and oil selection.


I found this on the cummins website.

 

Ok enough of the engine talk. If I put amsoil in my 06's auto tranny will I get smoother shifts? I sometimes get this very firm shift once in a while between 2nd and 3rd gear that drives me nuts. It would be nice to see the amsoil make it shift silky smooth. In my eyes if it did It would be worth every penny.

 

You're right. Somehow this developed into an engine discussion. Sorry about that. However, I would like to hear from those who use amsoil ATF in the 48re.

 

If I can find it around here, Im gonna use it next time. Prolly in a couple of weeks though.

 

It would be nice to here from someone that has tried it and it helped or cured my problem. Does anybody know how much it would cost to do a 48re?

 

My truck shifts kinda hard into third as well sometimes, maybe that is what they call lock up? Also does it when going into OD. I aint certain tho'.

 

I don't know on the 05 but my buddy has an edge juice on his 06 and it tells you what gear your in. When I drove his it is the shift between 2nd and third. On the 06 the tc only locks up at 50 mph, unless it is in the tow haul mode. Sometime I wish they could soften the shifts up. It would be a more comfortable ride if it shifted like the other 2 brands do.

 

Im sure you are correct, cuz I havent a clue, lol. Was just picking thru the brain and that came out hehe.

 

http://www.amsoil.com/opportunity.aspx

Go here and become a Perferred Customer. $20 a year. You will save more than that if you change all your fluids. They will give you a number to use when ordering. Takes about two day to get my order at my front door.