Follow up to difference in Quicksilver high performance and premium gear lube.

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wca_tim

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Re: Follow up to difference in Quicksilver high performance and premium gear lube.

not all synthetic oils are created equally - not even full sytnthetics are based on the same chemistry. Synthetic just means it was made by us and not in the ground. Amsoil and some other synthetics are based on polyalkylene oxides - not pure hydrocarbon. (and yes these can take on a huge amount of water compared to others and remain effective, 10% is a reasonable number!)

The answer to "can I mis synthetic and natural based oil?" is: It depends!

Also when mixing oils of any type, don't forget that they all have some degree of additive package including detergents, buffers, rheology modifiers, polymers, etc... additives from one oil may not work well with those from another. In most cases, it would just not be effective, in the worst, it could precipitate a salt (kind of like sand...) in the engine, or create significant corrosion or wear problems, or create sludge, blocking oil passages... (also not good).

Considering the price of engines, and the relatively low cost of oil and drive lubricants, I really don't think there is any reason not to run either high quality lubes designed for the application. Merc products are very well formulated, Amsoil is awesome, a number of the high quality petroleum based and synthetics are also outstanding products.

Whatever you do, change it... more often doesn't hurt, pushing it to the limit, well sucks to find out where that limit is the hard way...

my two cents worth...
 

HMK

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High-Performance Gear Lube

Engineered to provide maximum protection for sterndrive and outboard lower units. Exclusive formula is engineered to provide extended gear life in extreme conditions including high-speed and high-horsepower applications. Extensively tested to provide excellent protection against corrosion and excessive wear. Specifically formulated to help prevent failures due to water entering the gear housing. Extreme pressure synthetic additives protect gears from metal to metal contact. Since no industry-wide standards exist concerning marine gear oils, it is essential to use products such as Mercury High-Performance Gear Lube which has been specifically designed and tested for marine applications. DO NOT mix with Mercury Premium Gear Lube. Provides warranty protection for all Mercury MerCruiser sterndrive and Mercury, Mariner and Force outboard lower units. Available container sizes: 10oz Tube, Quart, 2.5 Gallon, 5 Gallon, 16 Gallon, 55 Gallon
 
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jbcurt00

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HMK, please take note of when a reply was last posted before posting to an inactive topic. After 90days w no new posts, please dont post to inactive topics

Over 8yrs later, closed

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