What's new
Ram Heavy Duty Forum

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

Dif oil change

Were you towing the space shuttle? There's no way your diff should ever get hot enough to melt paint unless something is very wrong with it or you painted the cover with finger paint. I suppose towing a super heavy load at high speed with a 30" tire on one side and a 40" on the other could heat it up a bit too.
I agree but it did burn the paint on the whole lower half. The pinion seal also blew out. I towed a 26 ft trailer. Could have been low on oil. I didn't know to check it back then from the new. My 2021 took half a quart when it was new. Had the seal replaced and fluid changed by the dealer under warranty and it went 20k more until I traded it at 11 years old.
I googled blister hot ram dif and there are many instances. Here is one thread that mentions a few.
 
Banks differential covers use only 5 qts of oil . Sure he is a salesman so is Ram , Chevy , Cummins and everyone else that has the capitol to advertise their product and tout it as the as the greatest thing since sliced bread . If the data and the product do the job as advertised ( which his do ) where's the problem ? People on this site including me pay enormous sums for cameras , mirrors and the list goes on . The man puts the data out and gets bad mouthed that it cost too much or the data is crap with nothing more than an opinion to back up the accusation . Every Banks product I have bought has worked as advertised . Which is more than I can say for a lot of the products I have payed hard earned money for .
 
Banks differential covers use only 5 qts of oil . Sure he is a salesman so is Ram , Chevy , Cummins and everyone else that has the capitol to advertise their product and tout it as the as the greatest thing since sliced bread . If the data and the product do the job as advertised ( which his do ) where's the problem ? People on this site including me pay enormous sums for cameras , mirrors and the list goes on . The man puts the data out and gets bad mouthed that it cost too much or the data is crap with nothing more than an opinion to back up the accusation . Every Banks product I have bought has worked as advertised . Which is more than I can say for a lot of the products I have payed hard earned money for .
I like mine and it makes it easier to change the oil. My money and my choice.
 
The only time I've encountered diffs that were too hot to really touch are newly rebuilt or manufactured ones that are going through their break-in process. Lots of friction during this process. Its also the reason they tell you to drive the trucks a few hundred miles before towing heavy - its not for the engines, its for the gear sets.

I changed my diff fluids after 500 miles. Gonna do it again at 30k. The front was probably a waste cause that diff really didn't see any loaded use in that time but whatever.
 
I agree but it did burn the paint on the whole lower half. The pinion seal also blew out. I towed a 26 ft trailer. Could have been low on oil. I didn't know to check it back then from the new. My 2021 took half a quart when it was new. Had the seal replaced and fluid changed by the dealer under warranty and it went 20k more until I traded it at 11 years old.
I googled blister hot ram dif and there are many instances. Here is one thread that mentions a few.
Yeah, low oil could definitely have caused it. A plugged up vent could have caused the pinion seal to blow out and then leaked oil.
 
unpopular opinion: synthetic gear oil lasts way longer than what your manual OCI says

The OEM fluid and OEM intervals are based on synthetic gear lube, which is also what’s called for in the owners manual.

The being said, all synthetic gear lubes are not created equal and there are several that will last much longer than the OEM intervals.
 
The OEM fluid and OEM intervals are based on synthetic gear lube, which is also what’s called for in the owners manual.

The being said, all synthetic gear lubes are not created equal and there are several that will last much longer than the OEM intervals.
Correct.

I’d be willing to bet that a 30,000 mile sample sent to a lab would show little to no degradation of the oil meaning it could go 2x,3x,10x? longer

You (not YOU, but you all in general) realize we live in a time when transmissions come from the factory “filled for life” with not so much as a dipstick- Toyota has been doing this since 07 at least and we have a fleet of tundras that still have factory oil in the transmissions and run stop and go atlanta traffic 5 days a week. Operate as new with cumulative million++ miles on them

Synthetic oils are amazing
 
In class 8 trucks 50 k interval . The only difference is size and they go thru much more severe use than most pick ups .
50K seems awfully short for Class 8. I've seen them in the 150K-250K range.
 
50K seems awfully short for Class 8. I've seen them in the 150K-250K range.
Sure we aren't talking engine oil change at 50k? We were changing Class 8 engine oil at 20k on straight conventional oil 30 years ago. Pretty sure many of them are going 50k on motor oil now. Don't know about now but the last trucking company I drove for didn't even have rears on their radar as far as oil changes go. It was more like change them when you worked on them, which was pretty much never.
 
Sure we aren't talking engine oil change at 50k? We were changing Class 8 engine oil at 20k on straight conventional oil 30 years ago. Pretty sure many of them are going 50k on motor oil now. Don't know about now but the last trucking company I drove for didn't even have rears on their radar as far as oil changes go. It was more like change them when you worked on them, which was pretty much never.
Last Big Rig l owned was 25 k .
 
I changed all my fluids , except transmission to amsoil at 10k, engine has been amsoil since the day i got the truck.
I tried Amsoil engine oil for the first time in my 2020 and I'm impressed with it. Pressure stays up and consumption is down. So far so good. Always used severe gear since my new 2005 3500 back in 05'.
 
How much
I tried Amsoil engine oil for the first time in my 2020 and I'm impressed with it. Pressure stays up and consumption is down. So far so good. Always used severe gear since my new 2005 3500 back in 05'.
oil were consuming and what was oil pressure vs after switching?
 
I tried Amsoil engine oil for the first time in my 2020 and I'm impressed with it. Pressure stays up and consumption is down. So far so good. Always used severe gear since my new 2005 3500 back in 05'.

On a Cummins the pressure difference you are seeing is in your head, there isn't an oil pressure transducer so the truck will report the same pressure for the same conditions as long as there is at least 6 psi (pressure switch). Bottom line, ignore oil pressure as it's a completely fake pressure.
 
Last edited:
The pressure difference you are seeing is in your head, there isn't an oil pressure transducer so the truck will report the same pressure for the same conditions as long as there is at least 6 psi (pressure switch). Bottom line, ignore oil pressure as it's a compleatly fake pressure.
For real for real ?
 
Back
Top