Marvel Mystery Oil MM14R-4PK - 1 Gallon (Pack of 4)
Key features
- •Spark plug life is also extended by using Marvel in your fuel
- •Improves fuel mileage by reducing internal friction in the engine
- •Note for diesel fuel users: this diesel fuel additive does not comply with federal low sulfur content requirements for use in model 2007 and newer diesel motor vehicles
Marvel Mystery Oil MM14R-4PK - 1 Gallon (Pack of 4)
List Price: $162.60$146.34DEALYou Save: $16.26 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 23, 2026In Stock (8)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.9
out of 5
Based on 10 reviews
5★
80%
4★
20%
3★
0%
2★
0%
1★
0%
Great Product - Seller Not So Much
carygal✓ Verified Purchase•August 16, 2023
This is a great product. However, one of the bottles in our 4 pack had been opened and then replaced in the case which allowed oil to leak out during shipment.
Cleaner internal chambers
Daniel G. Pesante✓ Verified Purchase•August 8, 2023
Have been using it for years, mixed at car tank or premixed for smaller engines. Keeps insides cleaner!
Marvel Mystery Oil is not really a mystery. It ...
Jim H.✓ Verified Purchase•July 17, 2023
Marvel Mystery Oil is not really a mystery. It works. I use it as a diesel additive to my truck and it does the job for me. Buying in bulk packages spreads out my purchases but I will definitely be buying again.
It's a real Mystery!
Susil Pershad✓ Verified Purchase•July 13, 2023
I read about this product and gave it a try. My car had some issues with fuel consumption and rough idling. Since I have a 70 L tank, I added 0.5 L on a full gas tank. After 2 or 3 days the rough idling was gone! The biggest surprise was the fuel consumption. Beware: at first when I added this in the fuel tank, the exhaust produced a terrible smell. This is now gone.
Update:
I added about 1 quart with the engine oil at oil exchange. My car runs now quieter. the engine oil looks like new after 1100 miles.
Update:
I added about 1 quart with the engine oil at oil exchange. My car runs now quieter. the engine oil looks like new after 1100 miles.
Cleaner engine
beegee✓ Verified Purchase•July 12, 2023
I use it in my fuel and I believe the engine runs cleaner.
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