Why don’t we have a look at what Ford recommends for the 2021 Shelby Mustang for track use. This would be the perfect place to use a mono grade, right? Have a look at the engine specs.
Why some people use monograde ?
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Now for the oil recommendation from the owners manual. Turns out the spec is for 5w50. So much for the fear of shearing down. Monograde is old man stuff.
The spec is WSS-M2C931-C, not the grade. The grade is a recommendation or a result of the specification.
Semantics. Their specification for the oil grade is 5w50.
AFAIK the SAE 30 monograde spec is just a high temperature spec, and that it's entirely possible that synthetic base stocks could produce a oil without VII that could be labeled "30 HD" yet actually be equivalent to 10w-30 or even 5w-30 due to the inherent properties of the base stock. Or the flip side is that today's conventional 30HD could likely actually be something more like a 20w-30, except that they're not actually tested at the low temp for the 30 spec. We just don't know. Or the flip side could be true as well- something like Mobil 1 10w-30 could have no VII and be effectively a monograde for performance purposes.
So with that in mind, it's not so clear to me that multigrades are inherently worse than conventional monogrades.
Yes, SAE J300 describes how multi-grade and mono-grade oils can be labeled for grade. The blender has a choice on how to label the product based on the performance results.
But a mono-grade oil with a winter rating is tested at low temperatures. There are single-grade winter oils and single-grade "summer" oils.
Oh, sure! There doesn't appear to be a 30w though; just a 25w, so I think what I was saying still holds- in the absence of a multigrade winter certification, just about any oil that meets SAE J300 for 30 weight could be so labeled.
ISTR reading on here years ago that there was speculation that at the time, 10w-30 Mobil 1 might have actually been produced without VII, and met the 10w and the 30 specs by virtue of the base oil. That's the sort of thing I'm talking about; in that case, that M1 10w-30 would be undeniably better than the conventional 30HD typically sold.
https://wiki.anton-paar.com/en/sae-viscosity-grades/
And also the old Amsoil product which was labeled as 10W-30/SAE 30, appropriate for an oil with no VII.
Holy Crap! It's an old thread!Hard to argue with you and your usage.
Have to ask though, "you're still drawing down that 36-gal reserve of Delo 400 straight-weight? I assume it's held up well over that period? Shake and pour, eh?"
Thanks.
I ran out of my Delo 400 SAE30 years ago. I do have a few gallons of the elusive Delo 15W30 but now my main stash is made up Pennzoil Platinum 10W30 that was on clearance for $3.68/jug(Cleaned out a half dozen Advance Auto's. ) and I picked up 8, 12 qt boxes of M1 HM 5W20 at Walmart for $1 /qt. I have quite a few of those $7.99 Chevron Supreme 5W30 SB jugs as well.
I should have enough oil for another 12 years.
Yep! Set for ANOTHER decade.
Looking for a rotary dial flip phone. If you see one, please let me know.The same reason some people still have rotary phones or dial-up internet.
https://www.theverge.com/circuitbreaker/2016/11/4/13518200/rotary-cell-phone-youtube-build-mr-volt
Ask and you shall perceive...
some people have good luck with old style monogrades in mowers. actually even better than modern mutligrades.
i see those are from gr l/ll oils, which may not last long, but chemically works like weak flush. (aromatics)
i see those are from gr l/ll oils, which may not last long, but chemically works like weak flush. (aromatics)
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Would a modem API SP monograde be a Group I or II base stock?
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Hook it up to the Wifi with an adapter and use it.
Boat motors (and lawnmower) have a tendency to have fuel dilution more so than cars. Straight grade seems to be less effected than multi-grade.
And before there were cell phones there were many dial-type IMTS phones, my dad had one in his car for a while.
Here's one that was portable:
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I just purchased a Penrite SAE 30 Mongrade. I’ll probably run it next in one of my cars, which are right now both on Castrol 5W30 full synthetic
Penrite SAE30 Mineral
Penrite SAE30 Mineral
| Colour | Red |
| Density at 20°C, kg/L | 0.894 |
| Viscosity, Kinematic, cSt at 40°C | 90 |
| Viscosity, Kinematic, cSt at 100°C | 11 |
| Viscosity Index | 113 |
| Zinc, Mass % | 0.117 |
| Sulphated Ash, Mass % | 0.67 |
| Total Base Number (TBN) | 6.5 |
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