Quicksilver 25W-40 4-Stroke Marine Engine Oil
1 Gallon
Price as of 2026-06-01. Check Amazon for the current price.
Quick Decision
Is This Right For You?
- •Buyers who prioritize quality over price in Motor Oil
- •Those who want a top-rated option — in the top 19% of Motor Oil by rating
- •You're on a tight budget — $11 above the category average of $32
- •Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor — 54% cheaper at $20 (Score A+)
- •Motul 7100 4T 10W-40 Full Synthetic Motorcycle Oil — higher rated at 4.9/5 ($70)
📊 Based on data analysis of 58 products in this category.
Mubboo Score: B
How It Compares
This Product Quicksilver 25W-40 4-Stroke Marine Engine Oil | Most Popular Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor | Best Rated Motul 7100 4T 10W-40 Full Synthetic Motorcycle Oil | Best Value Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil | |
|---|---|---|---|---|
| Price | $42.99 | $19.97 | $69.96 | $20.97 |
| Rating | 4.8/5 | 4.8/5 | 4.9/5 | 4.8/5 |
| Reviews | 2,703 | 27,740 | 7,632 | 8,413 |
| Mubboo Score | B | A+ | B+ | A+ |
Quick Specs
- Size
- 1-Gallon
- Unit Count
- 128.0 Fluid Ounces
- Item Weight
- 7 Pounds
- Manufacturer
- Quicksilver
- Model Number
- 8M0078620
- Liquid Volume
- 128 Fluid Ounces
- Container Type
- Bottle
- Item Type Name
- 25W-40 Oil
What People Say
Synthesized from 40 reviews · 100% verified purchases.
For older engines, high-mileage oils like Valvoline MaxLife can help reduce leaks and noise. Compare final cost as Amazon purchases may not qualify for manufacturer rebates, and note Castrol EDGE’s eco-pack can be harder to pour than jugs.
- Improved engine smoothness and quietness
- Good value and competitive price
- Dependable and reliable performance
- High mileage engine benefits
- Inconvenient eco-pack packaging
- No rebate eligibility on Amazon
Related Video Reviews
Key Features
- ✦Direct replacement for Mercury Marine 8M0078628
- ✦Designed for use in 4-stroke marine engines
- ✦Formulated to provide superior corrosion resistance and wear protection to maintain peak engine performance and reliability
- ✦Special viscosity modifiers help to optimize the performance of high-rpm 4-stroke outboard motors
- ✦25W-40 viscosity
Source: product listing on Amazon.
About Quicksilver
- 16 products in our database
- Average rating: 4.8/5 across all products
- Price range: $11.99 – $131.44
- Categories: boating-and-sailing, Fuel Additives, Motor Oil
Other Motor Oil
Bottom Line
Quicksilver 25W-40 4-Stroke Marine Engine Oil earns Mubboo Score B. Priced at $43 — a premium option, above the category average of $32. Rated 4.8/5 from 2,703+ reviews. Strong buy if: buyers who prioritize quality over price in motor oil, those who want a top-rated option. Skip if: you're on a tight budget — Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor (Score A+, $20) may fit better.
Frequently Asked Questions
Is the Quicksilver 25W-40 4-Stroke Marine Engine Oil worth buying in 2026?
It earns a Mubboo Score of B, with a 4.8/5 rating from 2,703 reviews — better than 81% of Motor Oil we track.
How much does the Quicksilver 25W-40 4-Stroke Marine Engine Oil cost?
It is currently $42.99 — premium-tier pricing for Motor Oil.
How does the 25W-40 4-Stroke Marine Engine Oil compare to other Motor Oil?
The category's most-reviewed alternative is the Valvoline MaxLife High Mileage 5W-30 Synthetic Blend Motor (4.8/5, 27,740 reviews, $19.97). The 25W-40 4-Stroke Marine Engine Oil carries a Mubboo Score of B vs A+.
Sources & References
Mubboo may earn a commission from purchases made through links on this page. Prices and availability are accurate as of the last sync (2026-06-01) and may change.