It taking 4 oil changes is actually good for the owner. If the oil gets too dirty too fast, your OCI would be extremely short, and filters would be overwhelmed immediately.
Mobil 1 "Advanced Clean" 5w-30
- Thread starter buster
- Start date
Specifically cleans what in one oil change ??
*If it doesn’t specifically mention pistons and rings - then it is just marketing fluff . I like Mobil 1 oils but unless Mobil is more specific about cleaning then it will be the oil I possibly move to only AFTER 4 OCI’s with Valvoline Restore and Protect .
Yeah i see your point.
I think Mobil 1 has been too much profit maximization at the expense of quality recently. I hope this is not a mere marketing play as you are suspecting
Does the oxidation seem rather low. With the cleaning claim I would expect strong Gp V presents or am I missing something.
Hard to say. Could be something entirely novel. They've hinted at that lately in some of the articles that have been published.
Not enough info for me to stop using Valvoline Restore and Protect
CleanSump
Site Donor 2026
If you want to be sure there's no hard carbon in your rings, Restore and Protect is great. Mobil 1 isn't claiming ring cleaning.
People keep convoluting this isn't that and x does ----, but y does ----.
They arent' the same thing and the manufacturers don't make same claims or give the same directions.
Chiquita Bananas don't make good apple pies, but Chiquita doesn't claim what Granny Smith does either. Want apple pie, buy apples. Want banana pudding, buy bananas.
People keep convoluting this isn't that and x does ----, but y does ----.
They arent' the same thing and the manufacturers don't make same claims or give the same directions.
Chiquita Bananas don't make good apple pies, but Chiquita doesn't claim what Granny Smith does either. Want apple pie, buy apples. Want banana pudding, buy bananas.
- Joined
- Oct 30, 2021
- Messages
- 727
I don’t know about apples
or peaches 
or whatever but I do know the new API SQ spec focused on Piston Ring cleanness so there’s really no need for Valvoline Restore and Protect now 
No it doesn't. All API specs among other specs have always had a ring deposit minimum. For SQ it's barely moved from 4.2 to 4.6 (Weighted Piston Deposit AVG). This is deposit PREVENTION not cleaning. And API SQ is not a high bar to pass.I don’t know about apples
Agree. If someone wants to look at a stringent cert for piston cleanliness, that would be Porsche A40, which requires zero visible piston ring deposits to pass, not API which allows them in small amounts.
OVERKILL
$100 Site Donor 2021
Where does this keep coming from? NO, IT DOES NOT. It contains Sequence IIIH, the same as previous API sequences like SP and SN.I don’t know about apples
API SQ-RC Sequence IIIH - ASTM D8111: Kinematic viscosity increase, Average Weighted piston deposits, Average Hot stuck rings
0W-8/0W-12:
Viscosity increase (max): 150%
Weighted piston deposits (Merits): 3.7 min
Stuck rings: none
0W-16:
Viscosity increase (max): 100%
Weighted piston deposits (Merits): 4.2 min
Stuck rings: none
All other grades:
Viscosity increase (max): 100%
Weighted piston deposits (Merits): 4.6 min
Stuck rings: none
@buster has posted a picture, I believe from AMSOIL of what 7.7 merits looks like, to give you an idea of how far from "clean" 4.6 is.
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