Does this work for a portable generator

It will work in almost any 4 stroke engine. It is specifically made for engines run mostly at full throttle .

Looking for sf, sg, sh, or sj rating. Which is this?

Marine oils are different than conventional motor oils so they are not rated by the same system. Mercury recommends 4-stroke marine oil for their applications. Quicksilver is a highly rated marine oil but it really depends on you application. What brand motor, inboard or outboard? Can you contact the manufacturer or look for an owners manual on their website. Often times the recommended oil is listed.

Why is this so much when its under $8.00 at walmart

(dont) buy from harvard marine ,they are a rip off i buy mine from my local sportsmans warehouse for less then $7 a quart.

Quicksilver 10w 30 Marine Engine Oil

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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363 kr

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Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🛥️ Sail Smooth, Sail Strong — The Ultimate Marine Engine Oil

WARRANTY APPROVED EXCELLENCE - Exceeds all marine engine manufacturers’ warranty requirements—trust the oil that professionals rely on.
ENGINEERED FOR MARINE MASTERY - Formulated exclusively for 4-stroke outboard, inboard, and sterndrive engines to keep your vessel running smooth.
TRUSTED BY THOUSANDS OF BOATERS - With a 4.8-star rating from over 1,700 reviews, join the community that demands the best for their marine engines.
CONSISTENT PERFORMANCE UNDER PRESSURE - Outstanding shear strength and viscosity retention ensure peak lubrication even in extreme marine conditions.
UNMATCHED PROTECTION AGAINST CORROSION - Advanced additives shield your engine from harsh saltwater environments, extending engine life.

Quicksilver 10W-30 Synthetic Marine Engine Oil is a premium lubricant designed for all 4-stroke marine engines, offering superior corrosion resistance, shear strength, and viscosity retention. It meets and exceeds manufacturer warranty standards, ensuring reliable engine protection and longevity in demanding saltwater environments.

Specifications

ASIN	B07V48QK2V
Automotive Fit Type	Universal Fit
Best Sellers Rank	#2,289 in Automotive ( See Top 100 in Automotive ) #47 in Motor Oils
Brand	Quicksilver
Brand Name	Quicksilver
Compatible with Vehicle Type	Outboard Marine Engines
Container Type	Bottle
Customer Reviews	4.8 out of 5 stars 447 Reviews
Global Trade Identification Number	00745061054950
Included Components	End Product
Item Type Name	Oil
Liquid Volume	32 Fluid Ounces
Manufacturer	Quicksilver
Manufacturer Part Number	8M0142135
Model Number	8M0142135
Package Information	Bottle
SAE J300 Viscosity Grade	10W-30
Size	1-Quart
UPC	745061054950
Unit Count	32.0 Fluid Ounces
Vehicle Service Type	Outboard Marine Engines

Reviews

G**O

reliable oil

good oil... never had an issue in outboards

16.04.2026

J**M

Good as always

Great products, no issues, running smoothly, will buy again

12.12.2025

B**S

Easy to use!

Great oil for out board engine, will use it again!

18.01.2026

M**N

Quality oil.

Quality oil, priced a little less than mercury.

15.08.2025

A**R

Good oil

Good

12.05.2026

R**E

worked as advertised

7.04.2026

G**.

Quality

As described. Always a quality product and good for warranty concerns

7.11.2025

C**H

Nice

9.03.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

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