Liqui Moly Pro-Line Engine Flush 500ml
4.7(9318 reviews)
Pros & Cons
Pros
- Cleans oil systems on gas and diesel engines
- Gentle and rapid cleaning action
- Neutral to seals and engine materials
- Compatible with catalytic converters
Cons
- Pre-oil-change additive, not an oil replacement
- Single 500ml use-up bottle
Our Rating
4.7/5
9318 reviews
Check priceIndependently reviewed
Updated Jul 2026
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