oil temp with twins

[hondarider552]

My kit had the L1 upgrade in it already (bought it new used).

Just personal preferance about the Mocal, I didnt want it cuz I want oil flowing to the cooler as soon as the engine is running. I didnt want the air dam, I can cut up some semi mud flaps for 1/10th the cost.


I would atleast get a oil temp gauge to get a baseline, maybe your truck doesnt move the oil pressure gauge as much as mine did as I was seeing 105* plus outside air temps.

 

[Sledhead]

The basic (non-Mocal) kit is still thermostatically controlled though so does it send oil to cooler right away?

Oh my pressure was down on the hills but I'll consider a temp gauge. I don't have much time to glance at gauges anymore, gotta keep an eye on traffic, nobody expects a loaded dually to be flying up the Coquihalla at my speed

 

[hondarider552]

I look at my oil temp gauge more than any other gauge in my truck, with twins you dont really need to look at the EGT

My adapter didnt have a thermostat in it, and my cooler is warm after it is running for a few mins. My oil pressure gauge was going from 35-65psi depending on the oil temp and hills, unloaded..

 

[Chevy1925]

I look at my oil temp gauge more than any other gauge in my truck, with twins you dont really need to look at the EGT

My adapter didnt have a thermostat in it, and my cooler is warm after it is running for a few mins. My oil pressure gauge was going from 35-65psi depending on the oil temp and hills, unloaded..

You also live in a state where winter consists of 50* mornings. I would want the thermostat deal for anything under 35-30* temps. In flag, my pressures would rocket to 80 psi and stay there most of the way to work on cold winter mornings. Not to mention, that included a 30 min idle session before work so my cab would be a little above freezing when i left lol

 

[hondarider552]

True, thats why it never leaves the garage

I'll use the factory GMC lower valance cover if I go somewhere cold to warm up.

 

[Sledhead]

Thermostat control will be required up here in The Great White North, any opinions on the basic kit or Mocal upgrade?

 

[hondarider552]

I would just do the basic kit. There arent many people running that cooler to prove it was worth it or not.

 

[hondarider552]

First trip towing with the cooler will be this weekend, towing a 5500 lb 28' gooseneck and cc/sb to Mike L's from AZ, we will see how it does. :thumb: Stay tuned

 

[Chevy1925]

So far, flat ground and 7300lbs truck on back, oil temp is 180 running 65mph in 50* weather. We will see how it does when it warms up outside in LA traffic

 

[sweetdiesel]

Just to do it, I unhooked the OAT sensor in front of the radiator stack and placed it behind the oil cooler to see what the air temps were behind the cooler at 60mph. Outside air temp was 56-65 and the rearview mirror read in excess of 112* the whole trip on the freeway. Very impressed so far. :thumb:

what does the OAT sensor go to max? I know it doesnt read below -50

 

[Chevy1925]

He says the highest hes seen so far is 150 lol

 

[Sledhead]

Can you take a run up the grapevine this afternoon to gather more data?

 

[Chevy1925]

The hill outside of palms springs will sufice

 

[super diesel]

Not to derail but, OH YES! That oil temp gauge is VERY important! These diesels are running hotter than most think. You can filter the snot out of these things as I do, but heat break down of the oil is the exterminator of oil (in which oil will NOT wear out if filtered correctly). This is as important as a EGT gauge and most are not aware of this. With heat and oil break down, the lubricity level is compromised. I stared modifying the sandwich adapters with T stats in them for some diesel truck folks around here to create a simple hook up system that uses 5/8 (10AN) fittings. Mine uses 3/4 (12AN) fitting that goes to 2 coolers. I feel the stock adapter doesn't flow what the truck is capable of. I mod them to flow more than twice as much just for insurance. Plus, ANY external cooler is better than none. I don't want to bypass the stock heat exchanger because it also heats the oil when it's cool as well.

 

[Sledhead]

Not to derail but, OH YES! That oil temp gauge is VERY important! These diesels are running hotter than most think. You can filter the snot out of these things as I do, but heat break down of the oil is the exterminator of oil (in which oil will NOT wear out if filtered correctly). This is as important as a EGT gauge and most are not aware of this. With heat and oil break down, the lubricity level is compromised. I stared modifying the sandwich adapters with T stats in them for some diesel truck folks around here to create a simple hook up system that uses 5/8 (10AN) fittings. Mine uses 3/4 (12AN) fitting that goes to 2 coolers. I feel the stock adapter doesn't flow what the truck is capable of. I mod them to flow more than twice as much just for insurance. Plus, ANY external cooler is better than none. I don't want to bypass the stock heat exchanger because it also heats the oil when it's cool as well.View attachment 21297

Which cooler(s) do you sell/recommend? I just can't justify the KB.

 

[super diesel]

Anything you can fit in the front air dam. I like the Setrab and Fluidyne, but I also use 2 stock trans coolers myself (oil flow is split between the two). You need something with at least 10AN hookups (internal flow needs to be as large as possible). However the adapters I use only divert a % of flow so if there never a serious restriction even if it wants to flow most the oil through the cooler. In the case that the cooler doesn't have the flow required, more of it can continue through the standard passages back into the motor if needed so it's not restricted. It finds the path of least resistance so if the cooler is small it's not an issue but if it's BIG it flows whats needed until a certain temp where it diverts most of the oil away from the cooler and back to the motor. My bumper allowed for my mods too. I've crashed A LOT of snow banks and drifts with it too. It's tougher than it looks.

 

[hondarider552]

Hey Michael, those filter adapters look familiar...do you sell those to Killerbee? I have the exact same one on my LB7...


More info: ~900 miles in 34 hours straight, towing. Outside temps varied from 50*-75* or so, drove more at night then anything, oil temp pre OEM oil cooler never got above 220*, and usually sat between 185-195* On the 6% grade from Palm Springs, oil temp reached a max of 220* with a prettty steady crosswind. I tried a little bit to run it hard a few times up the hills to see how the cooler handled it, and wouldnt go above 220* COolant was between 175-185*, never heard the engine fan the whole trip. Trailer is around 5500-6k, and truck was around 7500, cc/sb 6" on 35's. Overall very pleased with this cooler, oil lpressure was 65psi @ 65mph, not even the slightest fluctuation. At 220* oil temp, oil pressure would start to drop just below 60psi, but would quickly recover once oil temps dropped below 220* I dont have any of the special "semi mud flaps" to aid in airflow, just the cooler... :thumb:

 

[TDFDiesel]

Hey Michael, those filter adapters look familiar...do you sell those to Killerbee? I have the exact same one on my LB7...


More info: ~900 miles in 34 hours straight, towing. Outside temps varied from 50*-75* or so, drove more at night then anything, oil temp pre OEM oil cooler never got above 220*, and usually sat between 185-195* On the 6% grade from Palm Springs, oil temp reached a max of 220* with a prettty steady crosswind. I tried a little bit to run it hard a few times up the hills to see how the cooler handled it, and wouldnt go above 220* COolant was between 175-185*, never heard the engine fan the whole trip. Trailer is around 5500-6k, and truck was around 7500, cc/sb 6" on 35's. Overall very pleased with this cooler, oil lpressure was 65psi @ 65mph, not even the slightest fluctuation. At 220* oil temp, oil pressure would start to drop just below 60psi, but would quickly recover once oil temps dropped below 220* I dont have any of the special "semi mud flaps" to aid in airflow, just the cooler... :thumb:

You have a Killerbee oil cooler on your truck?

 

[hondarider552]

Yep. Probably the only item he sells that actually works, but it seems like his parts are made by other people, but then again, it's not rocket science to make a cooler, im just lazy..

 

[BLKLMM]

:thumb: