oil temp hit 260 degrees , whats the best synethic oil

[Hobo2]

Towing my DRV up and past Vail ,CO. on I70 east my oil temp hit 260 degrees, transmission never went over 209 degrees. How hot can the oil get. Whats the best oil for heavy towing.2016 f350 dually

[TxGearhead]

Mjfandal wrote:
Pick any of the major oil company full synthetic heavy duty oils. Pick correct viscosity for the ambient temperature your driving in. Shell, Exxon , Mobil, Chevron.. My opinion Mobil 1 oils along with Mobil 1 filters are the best. But I am also retired from Exxonmobil..

I agree with all that except the Mobil1.
But I retired from Shell. LOL

[Mjfandal]

Your manual will have a viscioty chart.

[Mjfandal]

Pick any of the major oil company full synthetic heavy duty oils. Pick correct viscosity for the ambient temperature your driving in. Shell, Exxon , Mobil, Chevron.. My opinion Mobil 1 oils along with Mobil 1 filters are the best. But I am also retired from Exxonmobil..

[TxGearhead]

theoldwizard1 wrote:

TxGearhead wrote:
10-30 may be approved, but my 2014 F350 diesel owners manual said to use 5w-40 for severe duty, which was defined as towing.

Motorcraft SAE 5W-40 Full Synthetic Diesel Motor Oil

You are NOT going to find this at your local Walmart !

TxGearhead wrote:
Might go to T6 5w-40 in the 2018.

According to Shell this does not meet the Ford WSS-M2C171-F1 specification.

I don't know where you would buy 5w-40 Motorcraft. My dealer didn't have any. I got the deer in the headlights look when I told them they might should read a Ford manual.
No worries now though, I progressed to a Cummins.

[Hobo2]

I got caught behind a few semi's on the climb up to vail. 2nd gear 3000rpm, traffic was heavy on te climb. 50 degrees outside. rest area attop of climb said 10,400 feet elevation. i didn't think about turning auto air off. The whole rig is about 29500 lbs.Temp hit 260 degrees last half mile.

[alexleblanc]

Back to the tow itself, what gear and rpm were you running? Roughly what speed?

[FishOnOne]

theoldwizard1 wrote:

TxGearhead wrote:
10-30 may be approved, but my 2014 F350 diesel owners manual said to use 5w-40 for severe duty, which was defined as towing.

Motorcraft SAE 5W-40 Full Synthetic Diesel Motor Oil

You are NOT going to find this at your local Walmart !

TxGearhead wrote:
Might go to T6 5w-40 in the 2018.

According to Shell this does not meet the Ford WSS-M2C171-F1 specification.

Look at the link Travlingman posted for Ford approved oils to use. Shell Rotella T6 is now approved and I suspect Shell hasn't updated their website yet.

So yes you can go to Wal Mart and buy a Motorcraft filter and Shell T6 and have a very enjoyable oil change experience.

BTW... The only big oil company Ford hasn't approved is Delo since they choose to make their oil gas and diesel compatible by keeping zinc and phos. levels low. A big mistake IMO.

[Puddles]

theoldwizard1 wrote:

Puddles wrote:

theoldwizard1 wrote:
Motorcraft Super Duty 10W-30 Diesel Engine Oil is sold at Walmart for under $20. It is API certified CK-4.

Even the old non-synthetic transmission fluid was good for over 250F.

Did you mean CJ4 ?

Nope. CK-4 is the "top of the heap" for diesel oil at the moment.

API Service Category CK-4 describes oils for use in high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway and Tier 4 non-road exhaust emission standards as well as for previous model year diesel engines.
.
.
.
API CK-4 oils exceed the performance criteria of API CJ-4, CI-4 with CI-4 PLUS, CI-4, and CH-4 and can effectively lubricate engines calling for those API Service Categories.

Thank you for the update... think I'll stick to API service category that the instruction manual states should be used in my diesel motor..

[theoldwizard1]

TxGearhead wrote:
10-30 may be approved, but my 2014 F350 diesel owners manual said to use 5w-40 for severe duty, which was defined as towing.

Motorcraft SAE 5W-40 Full Synthetic Diesel Motor Oil

You are NOT going to find this at your local Walmart !

TxGearhead wrote:
Might go to T6 5w-40 in the 2018.

According to Shell this does not meet the Ford WSS-M2C171-F1 specification.

[theoldwizard1]

Gearitis wrote:
Motorcraft 10w30 Diesel Oil synthetic blend is not CK-4 spec. And according to Ford and their official statement, do NOT use CK-4 in Powerstrokes, new or old as CJ-4 give better lubrication.

Clicky

Half correct, half incorrect.

The current Motorcraft diesel oils meet and EXCEED API CK-4 specifications so they can be used in other non-Ford engines that spec CK-4. Of course, they meet the Ford WSS-M2C171-F1 specification.

[TxGearhead]

10-30 may be approved, but my 2014 F350 diesel owners manual said to use 5w-40 for severe duty, which was defined as towing.
I used Rotella T5 15W-40 synthetic blend in my 2016 Ram. Might go to T6 5w-40 in the 2018.

[Travlingman]

Gearitis wrote:
Motorcraft 10w30 Diesel Oil synthetic blend is not CK-4 spec. And according to Ford and their official statement, do NOT use CK-4 in Powerstrokes, new or old as CJ-4 give better lubrication.

Clicky

That has changed since CK4 first came out. Here is the latest list I could find of Ford approved oils including CK4. Ford Approved

[stripit]

I've been using Schaeffer's Oil for years, and really think it is a quality product Schaeffers

[Me_Again]

Delo 400 15W-40. Change oil every 6 months as I do not hit 15K before that, per RAM guidance. Chris