Marvel mystery oil for a few cycles should help with sludge build up. Just be careful it can be hard on seals.
Pros: help with sludge build
Cons: hard on seals
Vehicle:
Kia
Reviews of MAREL engine oil
PR Score
?
Shows the percentage of positive votes. Learn more about the score in the help
30 votes
Average rating
?
The average rating is calculated based only on review ratings, excluding votes
Description
Share on social networks:
Marvel Mystery Oil, hope, prayers that the mystery comes through. Otherwise seafoam.
Pros: mystery comes through
Not sure on the Lucas. Looks little past that. Only marvel mystery oil can help you here. That stiff is magic...
Pros: stiff is magic
I have a 1965 F100. It has been in the family since it rolled off the showroom floor. My wife's grandfather installed a Marvel Mystery Oil inverse oiler. It still works. The truck has 93000 miles and runs great.
Pros: runs great
Vehicle:
Ford
Mileage: 149669 km
Can support the 1/4 cup of MMO in the engine oil. Had a Triton with a tick and adding the MMO made the damn thing run as smooth as a sewing machine
Pros: run as smooth
I did the Marvel mystery oil 25% and drive for 300 miles engine treatment. While it did cut oil consumption by quite a bit, barely half a quart in 3000 mi now, it didn't take long for the CVVT solenoid to start throwing codes.
Pros: cut oil consumption
Cons: CVVT solenoid codes
Vehicle:
Toyota
Mileage: 175000 km
I had really really bad lifter tick after I fixed the timing on my NA(you can see on my latest post) I put marvel mystery oil in it about 6/8th of a quart after dumping a quart of my oil which was at full before, let it idle for 10 minutes or so by that time the tick was almost fully gone took it out for a 3 minute drive down the street(I have no working radiator fans) went through all gears tick is completely gone only a little during start ups I hear that that’s normal, safe to say I am ready to change my oil back to normal.
Pros: tick almost fully gone
Cons: tick during start ups
I've used the Marvel oil in my car...it does wonders on keeping those lifters lubed better...I used in my Corvair... I mixed it w/ my oil..
Pros: lifters lubed better
It's best used to quiet down noisy lifters, and it works well for that. It will also clean up the inside of the engine a bit, but you can use ATF for that(which is cheaper).
Pros: quiets noisy lifters
Cons: ATF is cheaper
Write your review about engine oil MAREL
Help others - share your experience with this part.
Other engine oil
Popular spare parts MAREL
Voted AGAINST engine oil RAVENOL on the rating page
The brake pads OEM Alfa Romeo got the first review!
The brake caliper OEM BMW got the first review!
The brake pads OEM Infiniti got the first review!
For wiper blades PIAA already 100 reviews.
For battery Energizer already 25 reviews.
In the rating best water pump already 12 brands participate!
In the rating best timing belt already 13 brands participate!
In the rating best head gasket already 3 brands participate!
In the auto rating oil filter for Volkswagen Passat already 5 brands participate!
In the auto rating brake pads for Mazda 5 already 10 brands participate!
In the auto rating tires for Subaru Outback already 50 brands participate!
For cabin filter Fram already 25 reviews.
Voted AGAINST engine oil RED LINE on the rating page
Voted AGAINST engine oil PENNZOIL on the rating page
What we know about MAREL engine oil
The brand is registered in Italy. Official website: https://marel.com.
In March 2026, PartReview does not yet have a formed opinion of MAREL engine oil. This part is not in the ranking due to insufficient reviews. You can help by adding a review for MAREL engine oil.
Currently there are 9 reviews and 30 votes. Average rating — 4 out of 5. Vote balance: 24 up, 6 down.
Users also evaluated the qualities of MAREL engine oil:
- Warning light - oil pressure light flicker demands attention - rated negatively. 1 point out of 5.
- Engine noise - louder ticking or knocking can mean low or old oil - rated positively. 4.7 points out of 5.
- Exhaust smoke - blue smoke indicates oil burning that needs checking - rated positively. 4.5 points out of 5.
Engine oil MAREL in car-specific ratings
Unfortunately, there are no car-specific ratings for this part yet. You can help by adding a review and specifying your car.