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.

ASIN	B00GSX43WE
Best Sellers Rank	#162,049 in Automotive ( See Top 100 in Automotive ) #1,161 in Automotive Oils
Brand	Castrol
Customer Reviews	4.8 4.8 out of 5 stars (2,970)
Date First Available	18 September 2014
Item Weight	4.29 Kilograms
Item model number	03110
Manufacturer	Castrol
Manufacturer Part Number	03110C
Model	03110
Product Dimensions	30.23 x 24.13 x 11.43 cm; 4.29 kg
Viscosity	10W 30

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

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