What Type Of Oil For 4.3 Mercruiser [Update 2022] ❤️

What Type Of Oil For 4.3 Mercruiser

Mercruiser is an inboard engine manufactured by the marine engine firm Mercury Marine. MerCruiser makes a variety of different-sized inboard motors that differ in performance and function. 

The most recommended oil for all models of Mercruiser that range from 3-liters and up to 8.2-liter high output the recommended oil will be SAE 20W-40 MerCruiser full synthetic engine oil.

Protection from Flagship Corrosion

  • Advanced corrosion inhibitors with the latest technology outperform competitors and all industry standards.
  • It protects against corrosion and rust in a wet environment as well as in the off-season storage

Ultimate Wear Protection

  • Utilizing new advanced additive technology, Mercury had 33% more wear protection for camshafts in comparison to other marine oils based upon ASTM D6891’s Test Sequence IV limit on wear of camshafts (Versus API SJ-based Marine oils).


Five Liters Mercury 25W-40 Marine Engine oil 8M0089918

1 oil filter OEM 83702K

1 Instruction for Oil Change

what type of oil for 4.3 mercruise

FAQ what type of oil for 4.3 Mercruiser

What kind of oil do you put in a MerCruiser?

Recommended Oil. Mercury Marine, the manufacturer of the 4.3L MerCruiser engine, specifies that the owner uses Mercury MerCruiser Full-Synthetic Engine Oil, 20W-40, with an NMMC EC-W rating. This specific oil is recommended by the company for all MerCruiser engines, including the 4.3L.

What lubricants are not covered by the Mercury MerCruiser warranty?

Catalysts damaged by lubricants containing high levels of phosphorus may not be covered by the MerCruiser Limited Warranty. If Mercury MerCruiser Full-Synthetic, 20W-40 oils are unavailable, use the following lubricants, listed in order of recommendation.

What type of oil should I use in my vehicle?

A good-grade, straight-weight detergent automotive oil according to the last row of the operating chart below. NOTE: We do not recommend non-detergent oils, multi-viscosity oils (other than as specified), non-FC-W-rated synthetic oils, low-quality oils, or oils that contain solid additives.

Can petrol with alcohol be used in a MerCruiser?

If petrol with alcohol must be used, periodically inspect the complete fuel system for leaks and do not store fuel in the boat’s fuel tank for long periods of time. 3. To increase valve life on all MerCruiser engines, the following recommendations should be considered:

What oil does a MerCruiser take?

25W40 is recommended for all marine engines. Things to know about this oil: For use in all four-stroke marine engines. This oil is engineering approved for all marine four-stroke applications including outboard, MerCruiser, high performance, sterndrive/inboard.

What’s the difference between marine engine oil and regular engine oil?

Marine oil has been developed specifically for the most corrosive saltwater conditions. Automotive oils aren’t able to work with the constant corrosive atmosphere as boats do, therefore marine oils are much more robust in concentrations of anti-corrosive additives within their formulations.

Quickly Explaining How To Do A Oil Change On A 4.3 Mercruiser Boat

4.3 Mercruiser Oil change and Tune-up

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