2006 6.0 PSD oil recommendation

[redhat]

Friend of mine uses T6 5w-40 in his 2006 6.0 PSD (deleted, studded and tuned) with 230k. Real healthy motor, it was a 6.0 that was cared for and then bulletproofed.

He has claimed that the truck runs great after the 1,000 miles in on a fresh oil change. This has occurred for the past couple OCs to him. Almost as if the oil shearing adds to better performance.

I can seem to recall some discussion that T6 has reduced the amount of zinc and phosphorus in their formula? Or perhaps I am simply wrong.

Looking for a recommendation for him. My friend is no stranger to running that truck like a truck, however, always waits for it to warm up and is never put away wet.

 

[Brons2]

One of the HD 10w30s?

There's a guy who posted a series of great used oil analysis on a 6.0 with John Deere Plus 50 10w30.

 

[bora350]

Sounds like any oil of the rated viscosity and certification would do just the same. I'd use it. t6, t4 is not SN rated like most diesel oils.

 

[UNC151]

Placebo effect on steroids. Are we to believe that a slight change in viscosity is going to have such a profound effect on performance of an engine (that already has tons of torque) that it could be noticed? Color me incredibly skeptical. My 6.7L is 450HP/880ft-lb and changing from 5W-40 to 10w30 had no noticeable difference.

To answer your other question, CK-4 oils have dropped the phosphorus content to
https://www.fcsdchemicalsandlubricants.com/main/additionalinfo/dieseloilsWSSM2C171F1.pdf

 

[redhat]

What is thought of the Ford Motorcraft HDEOs readily available at Walmart. Price sure seems decent.

 

[CT8]

[ My friend is no stranger to running that truck like a truck, however, always waits for it to warm up and is never put away wet.] that is so important. Any major brand oil that meets the specs will be fine. Oil is pretty much oil

 

[dnewton3]

Any decent 10w30 HDEO conventional lube.

 

[roadrunner1]

The 6.0 isn't just "any diesel engine" as it uses high pressure engine oil to fire the injectors and depending on any internal oil leaks, health of injectors, quality of fuel,quality of oil their running characteristics can vary greatly.

I had two different 6.0's and part way through the second one I switched to 10w30 John Deere Plus 50 and there are multiple used oil analysis posted in the HDEO section here. I credit the Deere oil's high moly content in keeping the injector spools clean as I never had an injector issue with either truck with the latter traded in at 211,000 mi. due to a rust issue, never an engine issue.

Anyone I had ever talked to who had owned a 6.0 and ran Rotella had injector problems by 100,000 mi. and thought it was normal for this engine. There are obviously other variables to consider also.

 

[racin4ds]

The 6.0 loves 10W30 and since the 40Wt is shearing down to a 30wt within 1000 miles that is likely what your friend is noticing. I have ran 10W30 in my 05 6.0 for awhile now and the truck ran perfect on it, got a killer deal on VPB 15W40 so I put that in about a month ago and I can literally "feel" the truck being sluggish on it! It is not placebo, I wholeheartedly believe that certain people can be in tune enough with their vehicle to feel things like this!

I can't wait to get the 15W40 out of my truck and go back to Rotella T5 10W30!! Its what my truck has been on its entire life (Verified by service records from day 1) and I have not had ONE SINGLE issue with my truck at 130K miles and it gets worked!

Rotella is great oil, don't let anyone fool ya!

 

[redhat]

Originally Posted By: racin4ds
The 6.0 loves 10W30 and since the 40Wt is shearing down to a 30wt within 1000 miles that is likely what your friend is noticing. I have ran 10W30 in my 05 6.0 for awhile now and the truck ran perfect on it, got a killer deal on VPB 15W40 so I put that in about a month ago and I can literally "feel" the truck being sluggish on it! It is not placebo, I wholeheartedly believe that certain people can be in tune enough with their vehicle to feel things like this!

I can't wait to get the 15W40 out of my truck and go back to Rotella T5 10W30!! Its what my truck has been on its entire life (Verified by service records from day 1) and I have not had ONE SINGLE issue with my truck at 130K miles and it gets worked!

Rotella is great oil, don't let anyone fool ya!



Thank you, I have relayed this info to my friend. Most likely he will be trying a 10W30 next OC versus 5W40.

Thanks.

 

[RichR]

The International series of diesel motors(7.3,6.0,6.4)
we're notorious for shearing effecting performance due to oil hydraulicly running injection.

 

[clinebarger]

Originally Posted By: RichR
The International series of diesel motors(7.3,6.0,6.4)
we're notorious for shearing effecting performance due to oil hydraulicly running injection.


The 6.4L is Common Rail & has it's own unique set of issues along with some carry-over issues from the 6.0L like stopped-up/restricted oil coolers.

 

[bismic1]

Some 5W40 oils shear quickly in the 6.0L and some don't. It isn't true that they all shear to a 30wt quickly.

The Mobil 1 Turbo Diesel Truck and Mobil Delvac 1 ESP oils can go 4-5000 miles and still be above a 30 wt (maybe just barely, but still above). Schaeffer 9000 shears even more slowly than that. The Rotella 5W40 shears more quickly.

That said, there is no documented advantage of staying at a 40 wt.

Even the 10W30's shear and some can get close to a 20wt in 7500 miles. Posts on the "Org" show the T5 viscosity at 9.7 cSt after 8k miles. The JD 10W30 was documented at 10.6 cSt (by RoadRunner1 I believe) at 7.5k miles.

205k miles on mine and have run the Mobil 1 5W40 oils for quite a bit of that mileage (quite a bit at 7500 mile OCI's). Injectors are still original and no issues with them. At 7500 miles, my viscosity averages 66.2 SUS or 11.9 cSt (at 5000 mile OCI it averaged 67.7 SUS or 12.4 cSt). The 10W30 oils start out (virgin oil analysis) at 12 to 12.1 cSt.

The 6.0L injectors are sensitive to stiction issues and using the 15W40 oils in cold weather can cause issues w/ injector performance - especially cold starts.

 

[TiredTrucker]

I suppose the PS could be a little more brutal on a 10w30, but I have been using a 10w30 in my 2000 Detroit 60 12.7 for the last 500,000 miles. The motor now has 868,000 miles on it. It is a a factory reman motor, but has 868,000 miles on the reman and only thing that has been replaced is a couple of exhaust manifold bolts. Only uses about 2 qt in 22,500 miles OCI's. It has to move an average of 65,000 lb of truck and cargo, with occasional up to 80,000 lb. I use the 10w30 year round. It never goes out of grade. Oil samples look as good as when the motor had 50,000 miles on it. I'm convinced.