The best XW20 is a mono-grade (!)

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Delo 400 SAE 20
KV40C 61
KV100C 8.5
HTHS >2.9 approx.
P .069
Z .076
SA .95
Flash 236C
This engine oil would likely pass 10W cold performance, therefore be labeled 10W20.

Comparable 0w20 and 5W20 engine oils with KV100C of 8.5 typically have 2.7 HTHS.
If a mono-grade SAE20 was blended to the grade maximum of 9.3/KV100C, HTHS would be approximately 3.1

For engines that are designed to run on XW20 engine oil and operating in moderate to very hot climates, low saps SAE20 is an option to consider.
 
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Not sure the 20 has a gasoline engine rating, the 30 (which I've used a lot of from the days when AZ was blowing it out for 99 cents/gallon) has SJ, which is still older than most of the 5W20 recommended engines. It probably wouldn't hurt anything, but the 6.4 TBN is pretty low too.
 
P and Z are there.
If I liked chevron - No I wouldn't try it in a OC app. the KV40 is too high for short trippers - Just a 10w30 missing some VMs and some ppd.

On second though good choice for ford fleet trucks.
 
If a HTHS of 2.7 satisfied the needs of the engine,
a 50/50 mix of Delo SAE10 and SAE20 would be close to this:

KV40C 52
KV100C 7.7
HTHS >2.7


By mixing 12% SAE 50 with 88% SAE20, we end up at the KV100C maximum for SAE20:

KV40C 70
KV100C 9.3
HTHS > 3.1
 
If the ambient was above 5C/40F, I wouldn't worry about the presumed loss of fuel economy.

50/50 SAE20 and SAE50 brings the Delo 400 mix up to the SAE30 max of 12.5 KV100C

KV40C 110
KV100C 12.5
HTHS 3.9

A mono-grade is just as likely to thicken out of grade as thin with age.
Does the above illustration show a need for a SAE35 grade, or a change to stay in grade rules?
 
I worked with RLI to design a custom-made SAE20 bio-syn lube for my fleet at my previous location. We had an array of Fords, Dodges, and Chevys, and the product worked extremely well!

If you're willing to buy a few drums, or a shuttle, at a time, they may be willing to make you some.
 
The new SAE12 grade has a maximum KV100C of 7.1 and minimum HTHS of 2.0

Delo 400 SAE10W
KV40C 45
KV100C 7.0
HTHS 2.5-2.6 approx.

This engine oil could be labeled SAE 10W12 or SAE 5W12 if it passed 5W.

The new SAE16 has a maximum KV100C of 8.2 and minimum HTHS of 2.3
A mono-grade SAE 16 could have a HTHS of 2.8-2.9 and labeled 15W16 or 10W16 depending on it's cold performance.

The best aspect of the new SAE 12 and 16 grades, is that they are $3.00-$4.00 USD/qt and available in 5 gallon pails.
 
5w16 will be GF-6 exempt.
Fuel economy improvements are achieved by dropping HTHS. Is there corresponding economy gain from lowering KV100C?
To find out, drop one and not the other then compare results against a base-line engine oil.

KV40C 45
KV100C 7.0
HTHS >2.5

Above, a 10W12 with 0W20 HTHS. The engine oil is a fully formulated commercial product, Delo 400 SAE10.
Maybe the name should be changed to GELO 400.
 
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In addition to reduce viscosity, engine oil formulated for fuel economy improvements are modified to reduce friction, where as lubricants for drivetrain applications may be friction enhanced. Oronite released a video about friction modified HDEOs for fuel economy improvements, mentioning new additive technology.
This is what a patent application from 2008 looks like;

https://www.google.hn/patents/US9029304
 
Originally Posted By: userfriendly
5w16 will be GF-6 exempt.

In what way? Any formulator can make any grade they like and choose not to certify it to anything, or only certain specifications. Red Line's multigrade 20s certainly have no ILSAC approval, for instance. So, will 5w-16 simply be unable to be certified ILSAC, or are oil companies pondering the grade simply not bothering with ILSAC, because 0w-16 is more likely to be the OEM pick?
 
Originally Posted By: userfriendly
Delo 400 SAE 20
KV40C 61
KV100C 8.5
HTHS >2.9 approx.
P .069
Z .076
SA .95
Flash 236C
This engine oil would likely pass 10W cold performance, therefore be labeled 10W20.

Comparable 0w20 and 5W20 engine oils with KV100C of 8.5 typically have 2.7 HTHS.
If a mono-grade SAE20 was blended to the grade maximum of 9.3/KV100C, HTHS would be approximately 3.1

For engines that are designed to run on XW20 engine oil and operating in moderate to very hot climates, low saps SAE20 is an option to consider.





Sorry, but this Delo 400 SAE 20 is a 15W20, not a 10W20. This may be a VII-free mono-grade but it's primarily a diesel oil so will contain a goodly amount of ashless dispersant for soot handling. This really pushes up your CCS.
The trick with a gasoline 10W20 would be to throttle back on the ashless, go semi-synthetic and load up on AW/AO to get a low Noack oil that lasts for ages and is changed well before it's close to sludging out.
 
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I was thinking of your wife's 4L/100km Suzuki when I went looking for this 5 week old topic.
You mentioned the great fuel economy may be from the additive package in the FF 0W20.
That got me thinking, and I wound up here. Petro-Canada published CCS and KV -20C for their now discontinued SAE20 Duron.
I think it is in their 2013 lubricants hand book. It was a 15W20, but the pumping and cold flow looked like it would pass 10W.
If the engine will start, the oil will pump.
 
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I found the numbers on the Duron SAE 20. If we're looking at the same numbers, we're looking at...

KV100 9.1
KV40 64.1
CCS-15 2,822
CCS-20 4,932
HTHS 2.7

In rough terms, CCS doubles for every 5C drop so I'd expect the CCS-25 to be about 9,900 cP; too high to make this a 10W20.

You're absolutely right about if the car starts, what's the problem but it's not quite as simple as that. If an oil is ever to be successful/acceptable in the US, then it can't be too different from what people know so 10W is an absolute must. Likewise, any oil must offer something in the way of fuel economy. I'd be dropping the KV100 & KV40 way lower than 9.1 & 64.1 than this consistent with 2.6 HTHS min. You get less fuel economy than you would with say a 5W20 but the raison d'être for this the achievement of low Noack (say about 8.0% max) with a just about acceptable top and bottom at lowish cost.
 
In one sentence?
Reason to embark blending a 10W20 PCMO synthetic blend engine oil, would be the same as why Chevron introduced Delo 400 15W30 in 2014.
 
I wonder how my 1972 era PYB 20w20 oil would rate in the list
smile.gif
 
Originally Posted By: userfriendly
In one sentence?
Reason to embark blending a 10W20 PCMO synthetic blend engine oil, would be the same as why Chevron introduced Delo 400 15W30 in 2014.


Agreed. Given that for years 15W40 was the go-to oil for trucks, the logical way to get better truck fuel economy was 15W30 (or even 15W20), not 10W30 which seems to be the case. If you don't need the cold-flow performance (which trucks don't because they have lived with 15W40 for decades) why engineer it in?
 
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