Why though?
Post your latest oil change
- Thread starter Superbuick96
- Start date
OVERKILL
$100 Site Donor 2021
Dare I ask the reason for significantly deviating from the minimum HTHS requirement for this engine?
I don't think I'd do that, MB specs that 40 grade because they require an HTHS viscosity above 3.5, and in an AMG tuned twin turbo engine, I think I'd stick with MB recommendation, failing that maybe a full synthetic 5w40 or 15w40 HDEO, not a a resource conserving ILSAC 5w30 oil.
- Joined
- Nov 13, 2020
- Messages
- 300
Ok I'm gonna say it. Putting anything in car with AMG on the engine cover but what the owners manual states is just plain stupid. I imagine you have enough money to pay for the repairs, I'm sure you're not worried about it.
To burn through excess oil I had. I am currently running the vehicle up and down a highway at 2k rpm at a light load. I am not worried about it. I will have changed the oil by the time I plan on any type of heat or load bearing activity with any meaning.
I am not worried about it.
OVERKILL
$100 Site Donor 2021
Couldn't you just have flipped it on Craigslist or something? I have tons of oil that isn't appropriate for my current vehicles, so I don't run it in my current vehicles, I'll use it in OPE or give it away rather than using something that isn't suitable for an application in that application because I happen to have it on-hand.
Seems unnecessarily risky to run something with insufficient HTHS in this application, but it's your car.
- Joined
- Oct 19, 2020
- Messages
- 777
1990 Chevrolet Celebrity
2.5 4 cylinder
Out: unknown, AcDelco PF47E filter
In: Quaker State Advanced Durability 10w40, Fram Extra Guard PH3387A filter
2009 GMC Yukon Denali
6.2 Vortec V8
Out: Mobil 1 5w30, Napa Gold 7060 filter
In: AcDelco synthetic 5w30, AcDelco PF48E filter
2004 GMC Savanna G1500
4.3 Vortec V6
Out: unknown, Fram Extra Guard PH3980 filter
In: Carquest synthetic 10w30, Carquest red R85036 filter
2.5 4 cylinder
Out: unknown, AcDelco PF47E filter
In: Quaker State Advanced Durability 10w40, Fram Extra Guard PH3387A filter
2009 GMC Yukon Denali
6.2 Vortec V8
Out: Mobil 1 5w30, Napa Gold 7060 filter
In: AcDelco synthetic 5w30, AcDelco PF48E filter
2004 GMC Savanna G1500
4.3 Vortec V6
Out: unknown, Fram Extra Guard PH3980 filter
In: Carquest synthetic 10w30, Carquest red R85036 filter
I can see why a 40wt would be recommenced but I am not convinced running 30wt is detrimental to the engine under light load on the highway.
OVERKILL
$100 Site Donor 2021
I can see why a 40wt would be recommenced but I am not convinced running 30wt is detrimental to the engine under light load on the highway.
It's not the grade on the bottle, there are plenty of xW-30's that meet the HTHS requirements for your engine, this just isn't one of them. Energy Conserving xW-30's are all typically HTHS of ~3.0cP, whilst Euro-spec A3/B4 xW-30's and xW-40's are all >=3.5cP for HTHS. Where this becomes important is bearings, which produce high temp/high shear conditions, which is what HTHS represents.
@SugarMouthI can see why a 40wt would be recommenced but I am not convinced running 30wt is detrimental to the engine under light load on the highway.
I agree with your logic, and I think you will be fine. But I couldn’t do it myself, I would still run an A3/B4 40 grade since it is easy enough to get, and save up the ILSAC 30 grade for something else.
But I’m happy that you are game enough to give it a go. Hey, would you do a UOA for us? That will get the full value out of this oil change (for the community) and settle a lot of debate. But it’s up to you, I hesitate to ask another to spend money on my curiosity.
I doff my hat to you.
Last edited:
- Joined
- Dec 28, 2014
- Messages
- 3,001
Still burning through my autozone clearance stash.
6.4 quarts Valvoline Modern Engine 0w20
2016 Toyota Avalon
6.4 quarts Valvoline Modern Engine 0w20
2016 Toyota Avalon
I have not found the HTHS for Warren 5-30, is it documented anywhere?
You are a gentleman !
Whatever works best for you.
Yes, low miles, but that is your plan, so that is fine.
If doing high miles and/or spirited driving then you definitely need a A3/B4 & MB 229.5 oil that is high TBN and high HTHS. But the argument is that a ILSAC 30 grade with less TBN and less HTHS should be suitable for a short OCI and gentle highway application. I agree with you. The MB oil is to cover every type of ownership application. You have limited your application to what the oil should be able to handle (or vice versa).
Got busy yesterday and changed the oil in 4 of my cars. I typically just do an annual change and used up a variety of oils I had on hand. Pretty much all I have left in the stash is 5 jugs of the Mobil 1.
2016 Ram 1500 5.7
6qts QSUD 5w-20 and 1 qt of Miles Lubricants synthetic 5w-30 (Only had 6qts of QSUD on hand 7qt capacity)
Fram ultra
Had 6500 miles on the last fill of PP sending it into wix for analysis.
2008 Honda CRV
Mobil 1 5w-30
Fram Ultra
2007 Mazda 3 2.3
Castrol Magnatec semi-syn 5w-30
Denso cartridge filter
1988 F-150 4.9
QS conventional 10w-40
Wix filter
2016 Ram 1500 5.7
6qts QSUD 5w-20 and 1 qt of Miles Lubricants synthetic 5w-30 (Only had 6qts of QSUD on hand 7qt capacity)
Fram ultra
Had 6500 miles on the last fill of PP sending it into wix for analysis.
2008 Honda CRV
Mobil 1 5w-30
Fram Ultra
2007 Mazda 3 2.3
Castrol Magnatec semi-syn 5w-30
Denso cartridge filter
1988 F-150 4.9
QS conventional 10w-40
Wix filter
OVERKILL
$100 Site Donor 2021
If it's not A3/B4, the HTHS will be ~3.0cP.
Not trying to be a moron or an argumentative fool here... Not my intent or thought at all. And I think you know me enough to know that I am real deal when I say that.
It could be 3.0 or 3.1 or 3.2 or even 3.3 or 3.4....
I know Havoline high mileage 5w30 has been reported at 3.4.
Mobil Super synthetic 5w30 was reported at 3.3.
I believe Kendall full synthetic 5w30 TDS was at 3.2. Has was Valvoline 5w30 full synthetic at 3.2.
Having said all of that....
Regular Warren Oil 5w30 is likely 3.0 to 3.1.
OVERKILL
$100 Site Donor 2021
Yes, the high mileage oils tend to be a bit heavier. Usually it's somewhere ~3.0, as the GF-5, and now GF-6A lower limit for an xW-30 is 2.9cP, so 3.0, 3.1, sometimes 3.2. They are typically well below the 3.5cP lower limit for A3/B4.
On top of that, xW-30's that are A3/B4 are not API SN or SP, because the additive levels are higher in Euro lubes, while xW-40's don't have the same limits, so they can be SN or SP, which is why M1 0w-40 has been SN while Euro 0w-30's, if they carried an API rating, were, and continue to be, SL, like Castrol A3/B4 0w-30.
Similar threads
