Reviews of MAREL oil additives

PR Score ?

To calculate the score

missing 6 reviews

12 votes

Average rating ?

3.6

Response:

2.7

Smoke:

0.5

Engine noise:

3.6

4 reviews

Description

MAREL

Italy

marel.com

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MAREL › Oil additives

rabbitinfife 18 Feb 2013, 15:48

Rating 5.0

Engine noise:

I swapped a motor into my golf yesterday fired it this motor hasn't ran in like 4 years. Right away the valves were clack a lacking like crazy even after running for 15 minutes and pumping up there was still one or two of them were quite loud. Added a half quart of mmo amazing no more noise.

Pros: no more valve noise

Vehicle: Volkswagen Golf

MAREL › Oil additives

sbvwfanatic 4 May 2010, 19:09

Rating 4.0

Engine noise:

Just used it on an 83 4runner I picked up through a tow-yard lien sale. There was a pretty loud lifter knock and now it's down to a slightly annoying whisper.

Pros: quieter lifter knock

Cons: slightly annoying whisper

Vehicle: Toyota 4runner

MAREL › Oil additives

mr_e1974 4 May 2010, 18:13

Rating 5.0

Engine noise:
Response:

I've got just under 200k miles on my 12v VR6 and I use MMO at every oil change. I've been running 4 3/4 quarts of synthetic oil and 1/4 quart of MMO at EVERY oil change for almost 100k miles and the thing runs like a top.

Pros: engine runs like a top

Vehicle: Audi

Mileage: 160934 km

MAREL › Oil additives

EuroVeeDub 6 Aug 2004, 18:11

Rating 0.5

Engine noise:
Smoke:
Response:

I have used that Marvelous Mystery Oil crap twice on 2 different cars - within 10 miles, BOTH blew the headgaskets.

Cons: blew the headgaskets

Mileage: 16 km

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What we know about MAREL oil additives

The brand is registered in Italy. Official website: https://marel.com.

In March 2026, PartReview does not yet have a formed opinion of MAREL oil additives. You can help by adding a review for MAREL oil additives.

Currently there are 4 reviews and 12 votes. Average rating — 3.6 out of 5. Vote balance: 9 up, 3 down.

Users also evaluated the qualities of MAREL oil additives:

Engine noise - idle becomes quieter and smoother if the additive helps - rated positively. 3.6 points out of 5.
Smoke - exhaust smoke may reduce, making driving more pleasant - rated negatively. 0.5 points out of 5.
Response - throttle feels slightly smoother during takeoff - rated ambivalently. 2.7 points out of 5.

Oil additives MAREL in car-specific ratings

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