External engine oil cooler 2007 780 w/ 2006 isx

I'm asking because I don't know oil specs for sure. I do know that engines last a long, long time in OTR trucks, and when they do quit, it's not usually a lubrication issue, it's a liner sinking, a valve or injector tip dropping, etc. Unless there's some kind of problem, they don't use much oil. I use about a gallon between oil changes (18-20k miles) on my 3406E with 1.7million miles on the original seals, and 750k on an inframe.

I think that

A) You're asking for oil leaks, potentially ones you wouldn't catch until you'd lost most or all your oil.

B) If it were to work like you think it will, you'll get too much condensation in the crankcase that won't burn off, but

C) You're never going to pump enough oil through a bypass filter then through the cooler to make a noticeable difference in temperature.

 

Only sampling tells the real story of what is happening inside your engine. Dont bother watsing your time phoning the oil companies, you will only get the usual info about how their engineers have got it all figured out, and how everyone else is wrong. A couple people have mentioned great sites with great general knowledge. Saving a few bucks on a oil change here and there could cost you a motor down the road.

 

syntetic oils keep normal viscosity in wider temperature range, especially below zero and over 250-300. But i wanna remind you that oil is like a coolant too, to cool down pistons.

it is not all, syntetic oils have better evaporation rates.

 

I run my engines up to 230F coolant temp and 240 F oil temp when climbing hills, sometimes even higher, never had any heat related problems. Oil change every 30 -45 thousand kilometres. When I start the engine I drive carefully until coolant is at least 170F and oil 150F, only after that I can take full power out of it.

 

I will agree with the feeling here that my exp with an ISX running at 220 even bobtailing is a little high. I know Cummins doesn't make an issue of it, but then it is said conventional oil may begin to break down at 250; not many degrees of difference there!

The oil cooler has a thermostat, right? Can it be changed to a lower temp to keep the oil around 180-200? I am fitting a OPS unit that will (?) take care of evaporating any water in the oil if that is a reason to have oil temp well over 200.

 

It works from engine coolant so changing engine thermostat changes oiltemperature. That means your oiltemp shouldn't be any higher than coolant temp when bobtailing. Are you sure oiltempsensor is right?

 

Can be a little bit higher but if it is a lot of higher then better check sensors. Except if the sensor is in turbo oil return bit I've never seen oiltempsensor there.

 

I want my oil to be as thin as possible and still protect. My understanding is that 170-180 is the range it is designed to operate.