Looking for some advice on my oil cooler. I purchased a brand new oil cooler and an updated EGR cooler from Sinister Diesel and had it installed at a local
garage (they were already doing the bed plate seal under warranty). I took the truck in with 46,500 miles and the EOT/ECT temp variance was around 8 degrees. At idle it would be 0. I get the truck back and driving it home at 40 degrees outside, my readings were 9-10 degrees of variance! At idle it is now 4-5. The ECT has been a consistent 190. I called
up and let them know a new oil cooler should perform better than this and the guys started quoting the 15 degree TSB from
Sinister without question, is sending me a new oil cooler because they feel it should have no more than a 4 degree variance when new, but
is throwing a fit and refusing to warranty the product/labor to do it. (FYI - I paid the labor difference for the oil/EGR cooler to be installed). Also, keep in mind that the oil cooler I put in was a new
upgraded oil cooler.
Anyone think there is anything else I am missing? Did
not purge air out of the system? Do the new updated EGR coolers cause higher oil temps? Is the new cooler just a bad oil cooler? How do I get
to spend their time putting in the warranty cooler?
Any advice is appreciated.