bfisher003
SDD Junior Member
A few days ago we returned from a 7,000 mile trip out West, pulling our 14,500 pound fifth wheel with our 2018 F-350 diesel (13,000 miles at start, 20,000 miles at end). When out in Colorado and towing up some long steep grades it seemed to me the tranny temps climbed fairly high. For example, pulling eastbound on I-70 up the Ike (and due to traffic backup we literally crawled the seven miles or so up the Ike at like 10-15 mph in first gear) I saw the tranny temps reach as high as 239 degrees; not into the red on the gauge, but high, right? Coolant temps were hitting the low 220s.
I have scheduled the truck in for oil change and tranny drain and flush this week.
When I mentioned this and inquired about it at my local Ford dealer they said it probably got that hot because we were going so slow, but I experienced several other times that the tranny temps got into the high 220s on other long grades at higher speeds.
Are these temps abnormally high? Is a add on transmission cooler available and the way to go for my 6.7 diesel?
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I have scheduled the truck in for oil change and tranny drain and flush this week.
When I mentioned this and inquired about it at my local Ford dealer they said it probably got that hot because we were going so slow, but I experienced several other times that the tranny temps got into the high 220s on other long grades at higher speeds.
Are these temps abnormally high? Is a add on transmission cooler available and the way to go for my 6.7 diesel?
Sent from my iPhone using Tapatalk