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

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

Q: 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.

Q: 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.

Product ID: 540787049

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Details

Viscosity
10W 30
Brand
Castrol
Liquid volume
160 Fluid
Package information
Bottle
Vehicle service type
For use in 75

🔥Exceptional oil burn-off protection beyond industry standards

⚙️Phosphorus Replacement Tech extends emission system life

🛢️10W-30 viscosity for versatile engine protection

Frequently Bought Together

Castrol GTX High Mileage 10W-30 Synthetic Blend Motor Oil, 5 Quarts

FRAM Extra Guard PH7317, 10K Mile Change Automotive Replacement Interval Spin-On Engine Oil Filter for Select Vehicle Models

FRAM Extra Guard PH3614, 10K Mile Change Automotive Replacement Interval Spin-On Engine Oil Filter for Select Vehicle Models

Description

🛠️ Drive smarter, not harder — protect your engine with every mile!

LEAK DEFENDER - Advanced seal conditioners reduce leaks, saving you from costly repairs and messy surprises.
SLUDGE FIGHTER - Superior dispersancy formula actively combats sludge buildup, keeping your engine cleaner and running smoother.
FUEL ECONOMY ENHANCER - Optimized additives improve fuel efficiency, putting more miles in your tank and less at the pump.
ENGINE LONGEVITY BOOSTER - Phosphorus Replacement Technology safeguards your emission system for a longer-lasting ride.
INDUSTRY LEADING PROTECTION - Meets or exceeds API SP/SN PLUS and ILSAC GF-6 standards, ensuring top-tier performance for modern engines.

Castrol 03110 GTX High Mileage 10W-30 Motor Oil is engineered with advanced Phosphorus Replacement Technology and superior dispersants to extend emission system life and fight sludge buildup. Its exceptional burn-off protection and seal conditioners reduce leaks and engine wear, while improving fuel economy. This 5-quart motor oil meets or exceeds the latest API SP/SN PLUS and ILSAC GF-6 standards, making it a premium choice for high-mileage vehicles.

Specifications

Manufacturer	Castrol
Brand	Castrol
Model	03110
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 Kilograms
Viscosity	10W 30

Have a Question? See What Others Asked

Is this oil used for inboard Mercruiser?

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

For the 10w30 synthetic blend or semi synthetic blend do you have to use a regular oil filter or synthetic oil filter?

How is this quality?

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