Yet another 4.0 oil thread.. I want her to get a good daily dose of zddp.
Yes there are many threads about this subject, but I am a firm believer that the 4.0 is a very unique engine and not all of them act and sound the same way.
Ive been running M1 5w40 TDT synthetic for about the last 50x miles in my engine which has 150x total. Its a 2003. About 15x miles ago, she developed a slight lifter tick. These engines are notorious for it. It would come and go, but be more noticeable on cold Indiana start ups. I would normally just let it warm up like a diesel truck and it would be good to go so I lived with it. Due to availably, I had to use 10w30 M1 HM. (I believe I had stated in another thread I used 5w30 HM, but I found the bottle today.. it was 10w oil.) And well what do you know, the tick has almost gone away. It is present for a few moments on startup, but that's about it. While most people think the 4.0 needs a thick HDEO, I feel mine likes the thinner stuff.
Questions:
Is the thinner oil quieting down my lifters or is it just in my head? Maybe the HM flavor has different detergents than the TDT? My instinct tells me it would have less than the TDT only because diesels are pretty dirty.
Ive read multiple places that the M1 HM oil contains ether (seal conditioners or " seal swellers") Would that create an issue on my RMS? I actually called M1 and the "technician" said most of their oils already contain seal conditioners. But this was also the guy who recommended I ran 5w 50 synthetic oil.. I saw a 550+ horse mustang at a car show that wanted that stuff. I doubt that's what my jeep needs.. haha
How about the European 0w40 M1? I just worry the oil wont stick to the internals properly. or just be plain too thin. I checked the M1 site and the viscosity, cSt (ASTM D445) @ 40 degrees Celsius is 75 for the 0W40 the 10w30 HM is 78.1 @ 40 degrees Celsius. Not too sure on what those numbers mean exactly, but the 0w40 almost seems a tad bit thinner.
Or should I just drop M1 all together and find something else? Id like to stay on synthetic. There is also the RT5 which is the 10w30 synthetic blend. Im a little hesitant about the blend part.. Id rather it be full synthetic. And plus it also says on the back on the bottle that its compared to RT 5w40 oil so it sounds like its just like the M1 TDT. I want to stay on a thinner oil.
Im currently running the M1 filter as well, but im planning on going to Wix next oil drain.
Thanks
Yes there are many threads about this subject, but I am a firm believer that the 4.0 is a very unique engine and not all of them act and sound the same way.
Ive been running M1 5w40 TDT synthetic for about the last 50x miles in my engine which has 150x total. Its a 2003. About 15x miles ago, she developed a slight lifter tick. These engines are notorious for it. It would come and go, but be more noticeable on cold Indiana start ups. I would normally just let it warm up like a diesel truck and it would be good to go so I lived with it. Due to availably, I had to use 10w30 M1 HM. (I believe I had stated in another thread I used 5w30 HM, but I found the bottle today.. it was 10w oil.) And well what do you know, the tick has almost gone away. It is present for a few moments on startup, but that's about it. While most people think the 4.0 needs a thick HDEO, I feel mine likes the thinner stuff.
Questions:
Is the thinner oil quieting down my lifters or is it just in my head? Maybe the HM flavor has different detergents than the TDT? My instinct tells me it would have less than the TDT only because diesels are pretty dirty.
Ive read multiple places that the M1 HM oil contains ether (seal conditioners or " seal swellers") Would that create an issue on my RMS? I actually called M1 and the "technician" said most of their oils already contain seal conditioners. But this was also the guy who recommended I ran 5w 50 synthetic oil.. I saw a 550+ horse mustang at a car show that wanted that stuff. I doubt that's what my jeep needs.. haha
How about the European 0w40 M1? I just worry the oil wont stick to the internals properly. or just be plain too thin. I checked the M1 site and the viscosity, cSt (ASTM D445) @ 40 degrees Celsius is 75 for the 0W40 the 10w30 HM is 78.1 @ 40 degrees Celsius. Not too sure on what those numbers mean exactly, but the 0w40 almost seems a tad bit thinner.
Or should I just drop M1 all together and find something else? Id like to stay on synthetic. There is also the RT5 which is the 10w30 synthetic blend. Im a little hesitant about the blend part.. Id rather it be full synthetic. And plus it also says on the back on the bottle that its compared to RT 5w40 oil so it sounds like its just like the M1 TDT. I want to stay on a thinner oil.
Im currently running the M1 filter as well, but im planning on going to Wix next oil drain.
Thanks