Liqui Moly Pro-Line Engine Flush
| 500 ml | Oil additive | SKU: 2037
Price as of 2026-06-21. Check Amazon for the current price.
Quick Decision
Price Intelligence
- Budget:$4–$17
- Mid-range:$17–$44← You are here
- Premium:$44+
Is This Right For You?
- •Those who want a top-rated option — in the top 8% of flushes by rating
- •Risk-averse buyers — 9,681+ reviews give a highly reliable picture
- •Top 2% bestseller in flushes — proven market demand
- •Liqui Moly loyalists — the brand spans 58 products in our database
- •Idemitsu Power Steering Fluid offers a better rating (4.8/5) at a similar or lower price ($18)
- •BlueDevil Products Radiator Flush — 59% cheaper at $9 (Score A-)
- •Idemitsu Power Steering Fluid — higher rated at 4.8/5 ($18)
📊 Based on data analysis of 52 products in this category.
Mubboo Score: A
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other flushes
Computed from live Amazon rating, review count, and price across 52 flushes available to US consumers · last refreshed 2026-06-21.
How It Compares
This Product Liqui Moly Pro-Line Engine Flush | Most Popular STAR BRITE Salt Off Remover & Marine Engine Flush Kit | Best Rated Idemitsu Power Steering Fluid | Best Value BlueDevil Products Radiator Flush | |
|---|---|---|---|---|
| Price | $22 | $22.31 | $17.99 | $8.99 |
| Rating | 4.7/5 | 4.4/5 | 4.8/5 | 4.5/5 |
| Reviews | 9,681 | 1,680 | 653 | 517 |
| Mubboo Score | A | B+ | A- | A- |
About Liqui Moly
- 58 products in our database
- Average rating: 4.7/5 across all products
- Price range: $8 – $192.32
- Categories: brake-fluids, flushes, Fuel Additives, greases-and-lubricants, Motor Oil, transmission-fluids
If not the Pro-Line Engine Flush, consider these
Bottom Line
Liqui Moly Pro-Line Engine Flush earns Mubboo Score A. Priced at $22 — a mid-range option, below the category average of $43. Rated 4.7/5 from 9,681+ reviews. Strong buy if: those who want a top-rated option, risk-averse buyers. Skip if: idemitsu power steering fluid offers a better rating (4.8/5) at a similar or lower price ($18) — STAR BRITE Salt Off Remover & Marine Engine Flush Kit (Score B+, $22) may fit better.
Frequently Asked Questions
Is the Liqui Moly Pro-Line Engine Flush worth buying in 2026?
It earns a Mubboo Score of A, with a 4.7/5 rating from 9,681 reviews — better than 92% of flushes we track.
How much does the Liqui Moly Pro-Line Engine Flush cost?
It is currently $22 — mid-tier pricing for flushes.
How does the Pro-Line Engine Flush compare to other flushes?
The category's most-reviewed alternative is the STAR BRITE Salt Off Remover & Marine Engine Flush Kit (4.4/5, 1,680 reviews, $22.31). The Pro-Line Engine Flush carries a Mubboo Score of A vs B+.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-06-21) and may change.