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#3168042 - 10/26/13 05:29 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
roadrunner1 Offline


Registered: 04/08/09
Posts: 1242
Loc: oh
I take it there was no warranty involved with the purchase?

If you are experiencing cold-start issues you need to have your FICM voltage checked along with your injectors. I have cold-started with 15w-40 in sub-zero weather without issue.

I made the switch to 10w-30 several years ago (over 100,000 mi. ago) and its the only viscosity I'll run in my 6.0/7.3 as long as I own them.
I really believe you have some sort of underlying issue that a lighter viscosity may help to mask, but not cure as unless its sub-zero where you're at its still October and there are going to be several months much colder than now.

Get it checked out and let us know.
_________________________
'15 F350 6.7

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#3168050 - 10/26/13 05:52 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: roadrunner1]
Number21 Offline


Registered: 10/23/13
Posts: 230
Loc: OR
Originally Posted By: roadrunner1
I really believe you have some sort of underlying issue that a lighter viscosity may help to mask, but not cure as unless its sub-zero where you're at its still October and there are going to be several months much colder than now.

It very well might be a bad injector...but even if it is I'm going to have to "mask" it and make it run for as long as it will. I didn't expect to have zero problems at 193,000 miles. Archoil describes the problem I am having exactly, and claims their product will fix it, or at least mask it, for the long term. I don't normally believe claims like they are making but if it doesn't work in 100 miles I get my money back. That's quite a guarantee!

It doesn't get very cold here, 30 would be about the lowest, and that's pretty rare. Even so, I plan on adding an oil pan heater, and use it frequently with my block heater. Just no quick way to heat up 12+ gallons of fluids.

It doesn't have the problem if I leave the block heater plugged in for a few hours, so if it does have a 15w oil now, I am hopeful that a 5w should cure it at colder temps. I definitely want to check the FICM voltage.

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#3168101 - 10/26/13 07:05 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
roadrunner1 Offline


Registered: 04/08/09
Posts: 1242
Loc: oh
FYI, a 10w-30 has virtually the same cold-flow properties as a 5w-40, for usually half the price.

I have read that the product you mentioned has worked, but you still need to check your FICM voltage as it may be contributing to your issue.
Check out ed@ficmrepair.com.
_________________________
'15 F350 6.7

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#3172234 - 10/30/13 05:42 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: roadrunner1]
Number21 Offline


Registered: 10/23/13
Posts: 230
Loc: OR
OK, I'm confused about the different oil specs. My Ford manual says to use CI-4, CI-4/SL, or DHD-1. If CI-4 oil is not available, CH-4 is acceptable.

Royal Purple bottle says CH-4, CI-4/SL. Will it work? Can I mix the 10w30 and 10w40?

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#3172316 - 10/30/13 08:01 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
Garak Offline


Registered: 12/05/09
Posts: 22387
Loc: Regina, Saskatchewan, Canada
Originally Posted By: Number21
Royal Purple bottle says CH-4, CI-4/SL. Will it work? Can I mix the 10w30 and 10w40?

The 10w-40 will work fine as it meets the appropriate specifications. A friend of mine used to use it in his Cummins diesel. As for mixing with the RP 10w-30, I would not do it. You could get away with it if you were mixing it for a gasoline motor where both oils met the specification (both are SL rated). But, I wouldn't want to use the 10w-30 in any significant proportion in a modern diesel.

That's just me, though. I don't like mixing, and I prefer to meet or exceed specifications, rather than go with something inappropriate. Be aware that your RP 10w-30 is an SL/GF-3 lubricant, if I recall correctly. ILSAC rated lubes are not generally rated for use in diesels.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Wix 57356
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#3276064 - 02/09/14 03:05 PM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
fonecord2 Offline


Registered: 11/12/12
Posts: 107
Loc: Ohio
What will happen if you use a non-rated oil like the rp 10w-30 in a diesel?
_________________________
2006 CTS
1999 Aurora
2003 Harley Davidson Road King

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#3276168 - 02/09/14 05:12 PM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Clevy]
Ken2 Offline


Registered: 12/02/02
Posts: 6380
Loc: Washington St.
Originally Posted By: Clevy
I suggest devlac elite 222 0w-30. ...
Not available in the U.S.

Quote:
What will happen if you use a non-rated oil like the rp 10w-30 in a diesel?
Generally a diesel engine oil is more robust than an oil made for gasoline engines. There is the possibility of accelerated engine wear, inability to handle the soot, excessive foaming, or other problems.
_________________________
Every gun that is made, every warship launched..a theft from those who hunger and are not fed, those who are cold and not clothed.
Gen. Eisenhower


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#3276179 - 02/09/14 05:24 PM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: fonecord2]
Garak Offline


Registered: 12/05/09
Posts: 22387
Loc: Regina, Saskatchewan, Canada
Originally Posted By: fonecord2
What will happen if you use a non-rated oil like the rp 10w-30 in a diesel?

Additionally, the thickness might be an issue. Even the older RP 10w-30 SL stuff was still an ILSAC type 10w-30, just with the GF-3 specification. That's on the thinner side of a 30, whereas a 30 grade HDEO is on the thicker side of things, with an HTHS of 3.5 or higher. RP does have HDEOs, and their 10w-40, 5w-40, and 0w-40 grades at least at one point displayed some older API diesel specifications.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Wix 57356
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#3288630 - 02/20/14 04:15 PM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
Speedmaster03 Offline


Registered: 02/20/14
Posts: 2
Loc: Texas
Look at the Schaeffer 7000 synth blend 10w-30 *diesel* oil.
You get a high VI, meet CJ-4 specs, and get their kick-[censored] additive package.
The 10w-30 with a high VI and narrower multi-vis range is good on these EGR diesels to provide reliable injector function.
A 10w is fine for most winter use and you get a very pourable oil - put a quart of it in the freezer overnight and watch it pour the next morning.

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#3290480 - 02/22/14 11:05 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
fonecord2 Offline


Registered: 11/12/12
Posts: 107
Loc: Ohio
Where can you buy Schaeffer oil?
_________________________
2006 CTS
1999 Aurora
2003 Harley Davidson Road King

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#3295489 - 02/26/14 07:29 PM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
salesrep Offline


Registered: 08/22/03
Posts: 3443
Loc: lllinois
_________________________
"I'd rather entrust the government of the USA to the 1st 400 people listed in the Boston phone book than the faculty at Harvard " William F. Buckley

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#3295849 - 02/27/14 07:07 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
A_Harman Offline


Registered: 10/01/10
Posts: 6584
Loc: Michigan
Here's a stout oil that should stand up to the aggressive shearing of the Ford 6.0 PS:

http://www.amsoil.com/shop/by-product/mo.../?code=HDDQT-EA

It's a bit pricey, though.

Or Rotella T5 10w30 would be almost as good at a lower price.


Edited by A_Harman (02/27/14 07:09 AM)
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

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#3303126 - 03/06/14 09:00 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
Black_Thunder Offline


Registered: 09/23/06
Posts: 1149
Loc: Wisconsin
I suggest Motorcraft 10w30 diesel oil.


If your local walmart is like mine they've started carrying the motorcraft 10w30 diesel oil in 5 quarts jusgs around 17 bucks for 5 quarts, not at all bad for a quality diesel oil


Edited by Black_Thunder (03/06/14 09:00 AM)
_________________________
I'd buy Callahan autoparts if I could.

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#3303147 - 03/06/14 09:19 AM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: Number21]
bullwinkle Offline


Registered: 10/09/04
Posts: 6826
Loc: Cincinnati, OH, USA
I would believe CJ-4 RP 10W30 oil is coming eventually.
_________________________
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), 15 Transit 3.7, 03 Merc Grand Marquis 4.6 2V(XG2)

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#3303797 - 03/06/14 08:20 PM Re: Royal Purple 10w30 for Powerstroke 6.0? [Re: bullwinkle]
Garak Offline


Registered: 12/05/09
Posts: 22387
Loc: Regina, Saskatchewan, Canada
They should move straight to a 0w-30 HDEO (or even a 5w-30 HDEO), since such products are very hard to find in the States.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Wix 57356
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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