LiquiMoly 3721 Engine Oil Additives
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4,161 reviews
covering
50+ products
for the category
Engine & Oil Fluid Additives
Experiential insights by users
About LiquiMoly 3721 Engine Oil Additives
Overall Feedback:
92% positive
73% were satisfied with the cold start performance
When I pull up long grades, the Jeep heat gauge used to move a noticeable amount. Now, it doesn't even budge!
The rattle sound disappeared after using the engine oil fluid additive, indicating my positive sentiment towards the product.
89% liked its compatibility with engines, yet 11% encountered issues
After driving about 500 miles, the noise from the mechanical pump diminishes as the product finally works itself onto the component.
I advise against using this product in any Volkswagen engine as it caused engine failure in my Jetta with a 1.4L engine.
69% liked the foaming resistance
I add this product to the engine during oil change to quiet down the mechanical high pressure fuel pump.
70% highlighted the oil filter compatibility
I found Cera Tec accumulated in the oil filter housing of my Prius engine after using it with a Mobile 1 filter. I now use a factory filter and it works perfectly.
I added half a bottle of the additive to my 2016 Honda CRV while changing the oil and filter.
83% highlighted the viscosity rating, but 17% found it confusing
After adding the engine oil additive, the CRV became silky smooth and the roughness after starting the engine was no longer there.
My Lexus's mileage decreased from 40mpg to 38mpg, which is a negative result.
