Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: pinkduster]
#2390928
10/21/17 07:02 PM
10/21/17 07:02 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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20w50is very old school thinking.
I would not recommend 20w50 for anything other than a very old school, and archaicly, built engine.
Run the thinnest oil that will still give you goo oil pressure. I typically run 10w30, max.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: Supercuda]
#2390959
10/21/17 09:01 PM
10/21/17 09:01 PM
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Joined: Jan 2011
Posts: 15,905 Central Florida
larrymopar360
Stud Muffin
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Stud Muffin
Joined: Jan 2011
Posts: 15,905
Central Florida
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20w50is very old school thinking.
I would not recommend 20w50 for anything other than a very old school, and archaicly, built engine.
Run the thinnest oil that will still give you goo oil pressure. I typically run 10w30, max. I still haven't installed an oil pressure gauge which is crazy I know. It came with an electrical gauge since it was an AHB, but I didn't re-install when crate engine was put in, so I don't know what oil pressure I have currently running Valvoline 10W-30. Again, I know I have GOT TO put an oil pressure gauge back in! I figure my engine is kind of old school, not being high tech tight tolerances modern day engine. Yes, roller cam, but still not the tight tolerances of today's modern built engines, no?
Facts are stubborn things.
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Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: pinkduster]
#2390980
10/21/17 10:00 PM
10/21/17 10:00 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Well, I ran 5w30 in my 87 Diplomat's 318, said 318 is going strong still, unrebuilt.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: pinkduster]
#2391084
10/22/17 09:08 AM
10/22/17 09:08 AM
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Joined: Apr 2005
Posts: 1,322 Michigan
crlush
pro stock
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pro stock
Joined: Apr 2005
Posts: 1,322
Michigan
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I used diesel oil in my poly 318 to get some zinc in and too cheap for brad penn.
Last edited by crlush; 10/22/17 09:43 AM.
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Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: pinkduster]
#2391108
10/22/17 10:55 AM
10/22/17 10:55 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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let's not divert to the "benefits" of zinc in diesel oil
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: Supercuda]
#2391224
10/22/17 02:14 PM
10/22/17 02:14 PM
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Joined: Jan 2011
Posts: 15,905 Central Florida
larrymopar360
Stud Muffin
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Stud Muffin
Joined: Jan 2011
Posts: 15,905
Central Florida
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let's not divert to the "benefits" of zinc in diesel oil The only reason I went a little off topic is I revived this thread that began 2008, and has not been active in OVER two years. It's nine years old and seemed to have run it's course, and Valvoline VR1 was discussed within the thread.
Facts are stubborn things.
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Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: pinkduster]
#2391243
10/22/17 02:37 PM
10/22/17 02:37 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Being 9 years old I doubt any of the oil formulations mentioned then are still made today.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: moparsquid]
#2391266
10/22/17 03:08 PM
10/22/17 03:08 PM
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Joined: Nov 2010
Posts: 3,696 jersey
Spaceman Spiff
master
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master
Joined: Nov 2010
Posts: 3,696
jersey
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I use it for the high zinc content they removed most of the zinc a few years ago.
526 cubes of angry wedge, pushbutton shifted, 9 passenger killer!
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Re: Anyone using Rotella Diesel oil in their musclecars?
[Re: pinkduster]
#2391880
10/23/17 04:02 PM
10/23/17 04:02 PM
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Joined: Mar 2006
Posts: 74 Stevensville, ON
Frank Raso
member
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member
Joined: Mar 2006
Posts: 74
Stevensville, ON
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See the HAMB discussion: ZDDP again!My understanding is that the 800 ppm phosphorus limit is really only applicable for dual-rated (CK-4/SN) 30-grade HDEOs. I've been using Petro Canada Duron SHP 10W-30 which has both API CK-4 & Ford WSS‐M2C171‐F1 but has the same additive package for Duron SHP 15W-40 (API CK-4/SN & Ford WSS‐M2C171‐F1). Shell Rotella T4 now only has diesel ratings (no Ford WSS‐M2C171‐F1 either) and no longer has any S-ratings. But there are those who do have aggressive aftermarket cams and high pressure springs, or people just want extra assurance, like me. I use a heavy duty diesel engine oil with typical zinc level of >1200 ppm. Sholoff posted some brands a couple of posts up, any of those are good oils. The new CK-4 specification for HDEO's raises the performance level up even higher, but beware of oils that list both API CK-4 & SN service classification, as they now are required to meet the lower zinc levels of the SM category. Stick with an oil that is CK-4 only and you'll be just fine.
I'm NOT a fan of aftermarket oil additives, like ZDDP in a can, as they can (and probably will) upset the balance of the chemistry of the additive package, which includes other surface acting chemicals besides ZDDP, and just mixing the unknown chemicals together with no way to know how they will react is looney, no real chemist worth his diploma would approve. Also, just to clarify about ZDDP, it is, as I posted above, a surface acting chemical. It has a polar head (seeks to attach itself to metal surfaces) and an oil soluble tail. It reacts chemically with the metal surface due to the heat of operation to form a glass like layer (what we geeks call a "tribo film") on the rubbing surfaces of the engine, to provide a self sacrificing layer. When the parts rub together this layer will rub off, preventing metal to metal contact. As the layer is rubbed off, additional ZDDP in the oil will plate out on the surfaces to replace it. The rate at which the film rubs off is related to the severity of the load (aggressivenes of cam and pressure of the valve springs). A mild or medium severity cam and low to medium pressure springs will remove the film at a lower rate than an aggressive cam with high spring pressures.
Now this is important. The tribo film will only get so thick, no matter how much ZDDP is in the oil. Putting more ZDDP in the oil does will not provide a thicker film. Let that sink in for a moment. More ZDDP does not equal a thicker tribo film. What it means is the oil can protect the surfaces longer than an oil with lower levels of ZDDP. In theory, if you only put a few hundred miles between oil changes, even when using a modern SN gas engine oil with low levels of ZDDP, you will probably never deplete the ZDDP out of the oil and never have a wear problem. Of course, that depends on the aggressiveness of your cam and the pressure of the valve springs, and how hard you drive it.
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