High HTHS Dexos G1/3 compatible oils?

92saturnsl2

92saturnsl2

Joined
Mar 2, 2004
Messages
4,102
Location
Kentucky
Is there such a thing in say a 0/5w-40 viscosity? In my situation I'd need an oil with a LSPI additive package, which I understand to mean low Ca and higher Mg formula. That takes M1 0w-40 out of the equation to my knowledge. Are there oils out there in this grade or higher HTHS (>3.2) that generally meet the specification for Dexos G1/3 without being licensed / labeled as such? Or what would be considered the highest HTHS oil that is truly licensed for Dexos G1/3?
 
It would be Dexos R.

Amsoil 0w40 HTHS is 3.76 and claims to exceed Dexos R performance requirements. Already has a nice chunk of magnesium to replace a lot of the calcium

see for UOA:

Pennzoil Ultra Platinum 0w40 vs Amsoil 0w40 SS (Blackstone UOA)

Blackstone Labs oil analysis sample results for my 2019 Dodge Charger 392. There are two oil sample tests being posted. The first sample is of the Pennzoil Ultra Platinum 0w40 (SRT label) run with 3500 miles. This has been the factory fill since purchasing the car new 2/15/19. Filter used for...
bobistheoilguy.com
 
HTHS 3.3 is the highest I've seen, and that same oil is 3.1 this year, because of tightened limits on the fuel economy pass.
There was a "sell down" period when API SP Dexos 1 gen 3 products could be labeled as gen 2.

If I want a thicker oil with Dexos 1 gen 3 chemistry, I'll choose a 10w40 that passes API SP.
 
I don't need an oil with LSPI additive package. I don't live in LSPI fear.

I do use toptier fuel to keep the combustion chamber, piston tops, injectors and their fuel spray pattern as good and clean as possible. My turbo'd engines run premium always regardless of what moron at the automaker recommended regular. My oil change intervals are severe service to avoid all the common issues that we've been seeing with OLM and those 7.5k-10k+ mile intervals that too many blindly follow until failure. And, my GDI-only engines get a regular IVD cleaning spray.

My engines love their high calcium diet. Poor automaker tuning, along with typical consumer bad maintenance and fueling habits, are not going to find a solution in lspi oils.
 
Greasymechtech said:
And, my GDI-only engines get a regular IVD cleaning spray.
Click to expand...

How often do you do this? We have two GDI-only vehicles and my plan is to do it once a year.....so roughly every 8-12,000 miles or so. Mine (Crosstrek) is probably closer to the 8,000 mile mark and the other (Acadia) closer to the 10-12,000 area.
 
92saturnsl2 said:
Is there such a thing in say a 0/5w-40 viscosity? In my situation I'd need an oil with a LSPI additive package, which I understand to mean low Ca and higher Mg formula. That takes M1 0w-40 out of the equation to my knowledge. Are there oils out there in this grade or higher HTHS (>3.2) that generally meet the specification for Dexos G1/3 without being licensed / labeled as such? Or what would be considered the highest HTHS oil that is truly licensed for Dexos G1/3?
Click to expand...
Look for a "Euro" with ACEA A3/B4 or C3 and also states SN+ or SP.

A3/B4 or C3 insures an HTHS of 3.5 or more. SN+ and SP meet the same API accepted LSPI test.

Example:
Mobil 1 FS 0w40
Mobil 1 ESP 5w30
Mobil 1 ESP 0w40
 
Look for a Dexos R approved oil:

PdsDetailsPage

Mobil 1™ Supercar Motor Oils are a family of advanced full synthetic motor oil specifically designed for high performance cars to provide exceptional cleaning power and wear protection, and deliver outstanding overall performance.
www.mobil.com www.mobil.com
 
If I'm not mistaken, Mobil1 FS 0w-40 has some 3000ppm calcium according to VOAs I've stumbled on, which makes it a non-starter for an LSPI-prone application. When I spend some $22K on a vehicle (seems to be chump change these days but I digress), I don't want to open a can of worms, definitely prefer something SN+/SP that has a reduced Ca formula but with a higher HTHS in the interest of reduced engine wear; perhaps at the expense of some tiny percentage of fuel economy.

Looks like QS Euro 5w-40, M1 ESP / Supercar, Pennzoil Ultra Euro would meet those qualifiers. What's the best bang for the buck?
 
92saturnsl2 said:
My mistake, the only VOAs I could find were from a couple+ years ago. Is there an updated VOA available?

Edit: This UOA from early 2023 seems to suggest that M1 FS 0w-40 is still using a higher Ca formula with very little Mg.

www.swedespeed.com

B6324S5 | Blackstone UOA | Mobil 1 FS European 0W-40

www.swedespeed.com www.swedespeed.com
Click to expand...
Nevertheless, in Kentucky you don't need a 0W or 5W winter grade. SAE 10w40 API SP is the $4/qt solution for the vehicles you have listed on your profile. The Dexos R solution is likely 3 or 4 times the price, plus tax.
It appears that you like Havoline products. Download the Chevron 2023 salesfax. You will see that all the SP automotive engine oils have the same additive package, whether they are Dexos licensed or not.
 
userfriendly said:
It appears that you like Havoline products. Download the Chevron 2023 salesfax. You will see that all the SP automotive engine oils have the same additive package, whether they are Dexos licensed or not.
Click to expand...
Honestly I like whatever top-tier synthetic that is on sale/clearance or semi-syn if the price is too good to pass up. No brand preference.

The question with 10w-40 oils is base oil-- it takes a better base oil to cover the viscosity spread of a 0w-40, 5w-40, 0w-30, etc. and improved base oils often translate into better oils overall.
 
JRHAWK9 said:
How often do you do this? We have two GDI-only vehicles and my plan is to do it once a year.....so roughly every 8-12,000 miles or so. Mine (Crosstrek) is probably closer to the 8,000 mile mark and the other (Acadia) closer to the 10-12,000 area.
Click to expand...
Its just incremental prevention... so, pick any time or mileage interval and stick with it. I also don't have brand loyalty and rotate among the brands. Your once a year is a good interval to start with, preferably before an oil change interval.
 
Greasymechtech said:
Its just incremental prevention... so, pick any time or mileage interval and stick with it. I also don't have brand loyalty and rotate among the brands. Your once a year is a good interval to start with, preferably before an oil change interval.
Click to expand...

yep, I do do it right before I dump the oil. I have a few CRC and a handful of Berryman on hand. Have only used the CRC so far though.
 
92saturnsl2 said:
Honestly I like whatever top-tier synthetic that is on sale/clearance or semi-syn if the price is too good to pass up. No brand preference.

The question with 10w-40 oils is base oil-- it takes a better base oil to cover the viscosity spread of a 0w-40, 5w-40, 0w-30, etc. and improved base oils often translate into better oils overall.
Click to expand...
Go to the HDEO thread "does a turbo diesel need synthetic?" and watch the video from Chevron I posted.
Which is more important in your opinion, the base oil composition or the engine oil's performance and cost?
Havoline API SP ain't your great grand pappy's 10w40.
 
M1 0W40 is now API SP and so is tested to offer LSPI protection.

SP rated Mobil 1 0W-40 Euro spotted

Had to go to Walmart to get a few things. Checked the oil aisle and found this.
bobistheoilguy.com

Any Euro rated, ACEA C3 (mid-SAPS, high-HTHS) or ACEA A3/B4 (high-SAPS, high-HTHS) oil, that also carries API SP for LSPI protection would be perfect for you (and most other people on the planet).

Shell Helix Ultra / Pennzoil Platinum Euro 5W40 is another I believe.
 
Rod Knock said:
That's no longer the case, as Mobil 1 FS 0W-40 is API SP now, with a Mg/Ca DI package.
Click to expand...
Not according to API. M1 FS 0w40 is still API SN licensed.

Mobil is just using the language Amsoil pioneered.... Meets or exceeds....

1682123049732.png
 
You must log in or register to reply here.

Similar threads

7
2024 Buick Envista: Best oil for GM 1.2 LIH and Continental Belt In Oil compatibility.
2 3
Replies
50
Views
11K
pbm
O
Discovery 3 2.7 tdv6 oil reccomendations
Replies
3
Views
825
Bailes1992
D
Dexos Gen 3 Question
Replies
7
Views
4K
BMWTurboDzl
Y
ACEA A3/B4 oils still relevant in 2024 for Turbo GDI 'High performance' Engines? - Hyundai ElantraN
2
Replies
32
Views
4K
edyvw
M
How much is enough? What’s good enough?
2
Replies
29
Views
3K
TheRuley
Back
Top