Yrs the turbo is oil cooled. I don't know the normal temp of a nonturbo engine is to compare to...

 

So any suggestions on quiet mufflers? I kind of want to try a 5x11x22 magnaflow but the only 4in one they have is single 4in and dual 3in....wonder how a flowmaster 70 would soud...ill be using my 4" cutout as well

nevermind about the flowmaster, they dont have anything in 4in

 

nwtruckworks dot com/donaldson-m085171-muffler-4in-inlet-4in-outlet-40inches-long-low-backpressure-p-3780.html

40 in. long

 

I was wondering what temp engine oil is usually at when warm. Something
i have never looked into. I would assume close to coolant temps but that would be a guess.

 

thanks but I kind of want to avoid the straight through diesel mufflers, they just dont sound good IMO.

 

How about the magna flow 14153, it's a 5x8 casing and a 14" body.

 

had that one in line with another one and it wasnt very quiet at all, looking for something kind of quiet

 

Jake is running a magna flow that is from his DP all the way to his axle. He had it built just for him. His truck sounds like a prius, until he steps on it lol. But really his running one that is like 31" long, it's really quite, and it sounds pretty good when his stomps on it.

 

I run a magnaflow 4" straight through diesel exhaust......mine dont sound good ???????

 

Playing around with stockers "losing oil pressure" the thermostat will be open wayyyy before the oil temps get above 100F