I have a 05 6.0 stock besides a 5in exhaust. Smokes white after a cruise on the highway, wrench light eventually comes on if its a long enough drive. I haven't been able to scan the code yet. Not just on highway, but that wheres its most noticeable, also cant tell when im driving only when at a stop you can notice. I dont have a monitor to see if its getin hot, dash gauge reads perfect temp. Injectors? Oil cooler?
Dash gauge will always read perfect, until it's too late, and your oil fill cap has gone into pieces and your filter standpipe has melted into the oil cooler.
Could you get a reader? Ask a friend, buy a AutoEuginuity, OBD2 bluetooth reader.
You need to check your temperatures.
Have you ever reflashed your PCM? You could have the last strategy, that one shows the wrench when the deltas are higher than a given max.
Well, put the monitor on my truck when i got to my buddy's house, oil temp was at 236!! Ahhh, oil cooler is dunzo. Coolant was perfect, parked her tonight gonna get deleted and all the updates
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