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6.0L powerstroke towing with 10w30 #5114449 05/24/19 11:12 AM
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mattd Offline OP
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Do any of you guys have any UOAs of 10w30 in a 6.0L powerstroke? I have found some with 10w30 but none really said they are towing. I have been using this oil for the past 3500 miles in the MC 10w30 flavor in my truck. I have not done a UOA but I am just curious about how other engines have worn on this platform thing with 10w30. The weight is about 15,000 GCVW. Trailer is about 7000lbs loaded plus gear in the truck. I tow this probably 5000 miles per year mostly from April to October

Forgot to add about 234,000 miles on the truck

Last edited by mattd; 05/24/19 11:16 AM.

2007 Ford F-350 4x4 6.0 PSD

ASE Master, L1
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5114472 05/24/19 11:25 AM
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Buzzinhalfdozen Offline
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I think roadrunner1 had a 6.0 at one point, did some hauling and towing from what I can remember and posted some uoas of it with 10w-30 maybe try a search for those.

In my opinion 7000lbs isn't very much stress on a F350. I realize it's a different motor but there a a couple uoas on here of the newer 6.7 which is more power dense running 10w-30 towing over double your load with great uoas.

The heui system on the 7.3 and 6.0 usually shears 5w-40 or 15w-40 to a 30 anyway where a 10w-30 doesn't shear much at all.


1999 Jeep Cherokee sport 4.0L
2015 Jeep Cherokee 3.2
2015 Ford F150 5.0
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5114482 05/24/19 11:30 AM
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OVERKILL Offline
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Originally Posted by mattd
Do any of you guys have any UOAs of 10w30 in a 6.0L powerstroke? I have found some with 10w30 but none really said they are towing. I have been using this oil for the past 3500 miles in the MC 10w30 flavor in my truck. I have not done a UOA but I am just curious about how other engines have worn on this platform thing with 10w30. The weight is about 15,000 GCVW. Trailer is about 7000lbs loaded plus gear in the truck. I tow this probably 5000 miles per year mostly from April to October

Forgot to add about 234,000 miles on the truck


My buddy on here who used to have a 6.0L PSD that ran on a tune and would tow 13K+ regularly with a full bed ran Delvac 1 5w-40 exclusively. When he was in the engine to do injectors it was spotless.

I don't recall him doing any UOA's unfortunately, but he used this lube on the advice of Doug Hillary, who used to be quite active on here.


2019 RAM 1500 Sport - Mobil 1 EP 0w-20, FRAM Ultra
2016 Grand Cherokee SRT - Ravenol SSL 0w-40, FRAM Ultra
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5114522 05/24/19 12:04 PM
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Chris142 Online Content
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The 10w30 will be fine. Any problems will be from the usual stuff like head gaskets,egr cooler etc.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: 6.0L powerstroke towing with 10w30 [Re: Chris142] #5114540 05/24/19 12:25 PM
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mattd Offline OP
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I studded and deleted it 5 years ago so no worries there


2007 Ford F-350 4x4 6.0 PSD

ASE Master, L1
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5114579 05/24/19 01:00 PM
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Chris142 Online Content
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Originally Posted by mattd
I studded and deleted it 5 years ago so no worries there

run it


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5114676 05/24/19 03:19 PM
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bullwinkle Offline
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As long as it starts OK in cold (sub 10F) temps, or you can plug it in, you’ll be fine. I put over 250K on an ‘04 E-350 6.0 PSD van, most of it on Valvoline Premium Blue Extreme 5W40-it didn’t like to cold start on MC 10W30 HDEO, even with new batteries, FICM, & 5 new injectors. Unfortunately I had to park it on the street with no power available to plug it in.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5114679 05/24/19 03:21 PM
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Donald Offline
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Why not 5W40 synthetic?


2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: 6.0L powerstroke towing with 10w30 [Re: Donald] #5114706 05/24/19 03:53 PM
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mattd Offline OP
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Originally Posted by bullwinkle
As long as it starts OK in cold (sub 10F) temps, or you can plug it in, you’ll be fine. I put over 250K on an ‘04 E-350 6.0 PSD van, most of it on Valvoline Premium Blue Extreme 5W40-it didn’t like to cold start on MC 10W30 HDEO, even with new batteries, FICM, & 5 new injectors. Unfortunately I had to park it on the street with no power available to plug it in.


I put new injectors in when I did all the head work 5 years ago. The truck will start with no stiction down to 0*F without being plugged in on the 10w30. My main concern is the HTHS while towing.

Originally Posted by Donald
Why not 5W40 synthetic?


Cost for one. The 5w40 shears quickly down to a 30wt due to the injection system. The add pack on the MC oil is pretty good with the zinc and phosphorus and sill a CJ4 oil.

Last edited by mattd; 05/24/19 03:54 PM.

2007 Ford F-350 4x4 6.0 PSD

ASE Master, L1
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5114902 05/24/19 08:39 PM
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bullwinkle Offline
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10W30 also tends to be cheaper, although a little harder to find sometimes. If you have Menards around, they always have Rotella T4 10W30 for a good to great price.


06 Ram 3500 CTD 4X4(FG Venturi), 93 GMC C3500 6.2, 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)
Re: 6.0L powerstroke towing with 10w30 [Re: bullwinkle] #5115425 05/25/19 02:02 PM
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Originally Posted by bullwinkle
10W30 also tends to be cheaper, although a little harder to find sometimes. If you have Menards around, they always have Rotella T4 10W30 for a good to great price.


Menards also usually has the 10w30 Valvoline Premium Blue Synthetic Blend HDEO for $12.99 or 13.99 a gallon. It has good amount of Zinc/Phosphorus/Moly/Boron.


2012 Ram 2500 SLT 6.7L Cummins 4x4
2018 Dodge Durango GT 3.6L 4x4
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5115692 05/25/19 06:22 PM
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Macsignals Offline
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You'll be fine. This truck here weighs in around 16K without me or tools and and didn't mind T5 10W30 one bit, seemed to run and start better on it than the Chevron 15W40 that the shop always put in. That was on the 6.0 it had when I started driving it (which wasn't original, chassis had 209K) and its replacement that I put about 5K on before changing jobs.

[Linked Image]

Last edited by Macsignals; 05/25/19 06:23 PM.

-Ian A.
Mine:
2016 GMC Sierra 1500, L83 5.3L V8. Shell RGT 0w20, Bosch 3502 oil filter. Daily driver.
1992 Dodge Dakota, 3.9L V6. Delvac 10W30, Napa Silver filter. Out of service for restore.
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5115744 05/25/19 07:22 PM
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bismic1 Offline
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Originally Posted by mattd

Originally Posted by Donald
Why not 5W40 synthetic?


Cost for one. The 5w40 shears quickly down to a 30wt due to the injection system. The add pack on the MC oil is pretty good with the zinc and phosphorus and sill a CJ4 oil.


FYI - Many 5W40's will go practically 5000 miles before shearing to what a 10W30 starts at. It depends on the formulation and the amount of VII used. For example, Schaeffer 9000, Mobil 1 TDT, and Mobil Delvac 1 oils (5W40) are all routinely at 12 cSt at 5000 miles. Rotella T6 and Valvoline PBE will shear at a slightly faster rate according to some very limited data I have.

Regardless, if you don't go too long on an oil change, the 10W30 will be fine. Just be aware that 10W30 can shear also (not all of them shear at the same rate though). There is data posted on numerous forums showing 10W30 oil to be in the very low 30 wt range (close to a 20 wt) after 7500 miles. No surprise that it (10W30 oil) will shear more slowly than most 5W40 oils.

Rotella T5 can be as low as 9.5 cSt after 8k miles (below 9.3 is a 20 wt). The viscosity when new is 12 cSt. Some 10W30's shear at a slower rate than T5.

Getting oil on sale (and using rebates) can seriously reduce the price impact of 5W40 oil and 10W30 oil. I have numerous gallons of TDT and Mobil 1 oil purchased between 12 and 15 dollars a gallon.

Viscosity (SUS) vs Miles Driven (Mobil Delvac 1 and TDT 5W40) chart below. Note 66 SUS is essentially 12 cSt.

5W40 viscosity vs miles driven.jpg
Last edited by bismic1; 05/25/19 07:51 PM.

2006 F250 6.0L PSD CC SB FX4
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5115999 05/26/19 06:22 AM
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bismic1 Offline
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As a reference ... the viscosity shearing on 10W30 T5 after 8k miles comes from posts in threads by roadrunner1, who was referenced earlier in this thread. His John Deere +50 10W30 did not sheer as fast. It was down from 12.1 to 10.6 at 7.5k miles, according to him.

My personal Mobile Delvac 1 results were down from 14.4 to 12 at 7.4k miles. Faster shearing than at least the JD +50, but right at the 30 wt starting point. It did not shear faster than the T5 (12 sheared to 9.7 ... when averaging 3 points).

Mobil 1 TDT sheared slightly more (down to 11.8 and 11.9). Schaeffer 9000 sheared even less than the Mobil oils. My personal data on Mobil Delvac 1 and TDT were taken on the second oil change after switching to the oil because of the residual 16% of oil that is held in the system after each oil change). I don't believe the 10W30 oil data included that precaution.

Note - fuel dilution was all under 0.5% (mdl) from Blackstone who only estimates it from flashpoint. Fuel dilution of course would lower the viscosity if it were to occur.

Last edited by bismic1; 05/26/19 06:30 AM.

2006 F250 6.0L PSD CC SB FX4
Re: 6.0L powerstroke towing with 10w30 [Re: mattd] #5117727 05/27/19 10:57 PM
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Not sure why there is still some slight paranoia on the part of some folks about using a 30 weight in these small diesels. Every heavy truck engine manufacturer is recommending and factory filling with 10w30. And those engine have to move up to 80,000 lb from Mexico to well into Canada, year round.


Freedom is not about having the choice to do what you want, but the choice to do what you ought.
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