It is especially designed for heavy duty or high-performance applications, where other gear lubricants might not be good enough. Ensures less gear rattle and whine, and longer bearing and gear life due to better lubrication.

Marine gear lube, unlike automotive gear lube, is formulated to emulsify water. This serves two purposes: It provides consistent lubrication, keeping water away from moving parts.

Lucas Oil Products, Inc. is an American manufacturer and distributor of automotive oil, additives, and lubricants. It was founded by trucker Forrest Lucas and his wife Charlotte in 1989.

Marine Gear Oil 75W-90 is a Full Synthetic, BLUE coloured, SAE 75W-90 gear oil formulated to meet the requirements of outboard gear cases and stern drive units. It provides outstanding protection from cold start to operating temperatures, making gear selection and engagement smoother and easier.

For most SxS there is no need to have separate fluids, Lucas Multi-Purpose Gearcase and Differential Fluid will perform well in all these applications*. Lucas SxS Multi-Purpose Gearcase and Differential Fluid contains a friction modifier for smooth engagement of the front differential and low wear.

A: Use it in new engines after your factory recommended break in period. Put in a quart each time you change the oil in your car. You should be able to go at least 50% longer between oil changes and your engine will last much, much longer.

As well as the oil meeting the right performance classification, the correct gear oil viscosity must also be used in automotive transmission and final drive transmission applications. A more viscous oil than specified will induce poor shift quality, run hotter, and produce lower fuel efficiency.

Synthetic oils are typically more effective and durable than conventional oils, and can provide a range of benefits such as improved lubrication, enhanced temperature stability, and better protection against contaminants.

This gear oil is both excellent for race cars and any heavy-duty application where plain gear oils just aren't good enough.

• Quicksilver 858064Q01 SAE 90 High Performance Gear Lube , 32 oz.
• Valvoline SynPower SAE 75W-90 Full Synthetic Gear Oil 1 QT.
• Lucas Oil 10043 SAE 80W-90 Heavy Duty Gear Oil - 1 Quart.
• Quicksilver 80W-90 Premium Gear Lube - Marine Engine - 32 Ounce.
• STAR BRITE Hypoid 90w Lower Unit Gear Lube - 32 OZ (027132)

When comparing the appearance of engine oil vs. gear oil, you may be tempted to think they're the same thing, but they're not. Gear oil is specifically designed to protect, lubricate, and cool gearing systems. Engine oil lubricates the bearings and protects your car's engine from the additives in gasoline.

If you're planning on changing the oil on your fishing boat's outboard motor this year you should really consider changing your gear lube while you're at it. Just like oil, gear lube should be changed every 100 hours of use or at least once a year.

Never, under any circumstances, put engine oil in your differential. This will result in devastating damages to your engine. Engine oil is much different than gear oil, mostly it cannot withstand high pressure.

75W90 GL-5 Gear Oil The go-to gear oil for most differentials.

Since Lucas Heavy Duty Oil Stabilizer is 100% petroleum, it can safely blend with all other automotive lubricants including automatic transmission fluid, mineral oil, petroleum oils, and synthetic oils. As an added benefit, it can be used with every oil change and safely extends oil life 50% longer.

You would typically add it if either you're changing your oil, or even slightly after, but only as long as you are a quart low on dipstick…as adding it when the oil is at the top of your dipstick will definitely cause problems!