Hey Guys, looking for info on the exact temperature range for the 6.7 H.O. Aisin engine/transmission with a winterfront. I'm not finding it in my online manual and my experience is to NEVER wait for a idiot warning light to come on. My experience is with Big trucks. I have a 2014 Pete 389 with a 15ltr. Cummins ISX and a Eaton fuller 18 speed. My pick up didn't come with a manual. So I've downloaded one from Stellantis which kinda sucks. Thanks for the help.
Ram Heavy Duty Forum
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Coolant, Oil, Trans, and Turbo temps on a 2024 6.7 H.O. DRW with a winterfront running 10w30
- Thread starter PJC911
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H3LZSN1P3R
You're doing it wrong
The temps should be the same as normal with the winter front but you should be using 5w40 in the cold
AirRyan
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Here is a link to the soft copy. If you have a 2024, call up Ram Care and ask them to send you one; they should be happy to do so for you. I run 5w40 all year round here in Central Texas because I like the oil specs better than a 10w30 and while Ram says to do so for negative temps, I like the premise of a 40 weight oil in there for the Central Texas Summers. I'm also into Corvette and I've personally witnessed GM changing the oil spec on my existing Corvette from a 5w-30 to 0w-40 for a great range of protection, and I like having that 40 weight oil in there when it's 100°F+ ambient temperature outside.