Is this oil used for inboard Mercruiser?

Castrol does not recommend using passenger car engine oils like Castrol GTX High Mileage 10W-30 in marine applications. At this time, Castrol does NOT offer 4-stroke marine oil or NMMA certified engine oil therefore Castrol GTX High Mileage 10W-30 would NOT be recommended for use in a Mercruiser Inboard.

Can I use this oil in my zero turn mower john deere says 10W-30

This is a blended half synthetic, if your engine requires 10W 30 this will work. The purely synthetic oil is very thin and can find a leak in machinery very quickly. This in my 95 YJ has performed well.

Castrol motor oil is quality without question. I have several cars some oil and some new . I use it in all of them. The high mileage oil truly helps the cars with high mileage.

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🛠️ Keep your engine young, mile after mile!

ENGINE LONGEVITY BOOSTER - Specifically engineered to reduce oil burn-off and minimize leaks in high mileage engines.
TRUSTED BRAND RELIABILITY - Castrol’s proven formula trusted by professionals for superior engine cleanliness and wear protection.
EXTENDED OIL CHANGE INTERVALS - 5 Quart size supports longer maintenance cycles, saving time and hassle.
OPTIMAL VISCOSITY PERFORMANCE - 10W-30 grade ensures smooth engine start-up and consistent protection across temperature ranges.
PERFECT FIT FOR MATURE ENGINES - Designed to rejuvenate and protect engines with over 75,000 miles, keeping your ride running like new.

Castrol 03110 GTX High Mileage 10W-30 Motor Oil is a premium 5-quart motor oil designed to protect and extend the life of high mileage engines. With its optimized 10W-30 viscosity, it ensures smooth performance and reduces oil consumption, making it ideal for vehicles with over 75,000 miles. Trusted by professionals, this formula helps minimize leaks, reduce wear, and maintain engine cleanliness for a longer-lasting drive.

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Manufacturer	Zenement
Brand	Castrol
Model	1
Product Dimensions	30.23 x 24.13 x 11.43 cm; 4.29 kg
Item model number	03110
Manufacturer part number	03110C
Item Weight	4.29 kg
Viscosity	10W-30

Castrol 03110 GTX High Mileage 10W-30 Motor Oil - 5 Quart by Castrol

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