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T's Advanced Synthetics

Marine Engine Lube FAQ

What are the types of boat engines?
There are two types of engines that may be in your boat: two-stroke and four-stroke. 

Most engines in newer boats are four stroke though there are still quite a few two-stroke engines on the water. The lubrication system in these engines differs based on which type of engine is in your boat.

What are the lubrication requirements between two-stroke engines and four-stroke engines?
The lubrication requirements of two-stroke and four-stroke engines are very different because of the way each system works. 

The Synthetic 2-Stroke Marine Oil is mixed with the fuel and lubricates the engine as it passes through. It burns along with the fuel and exits via the exhaust system. 

Synthetic 4-Stroke Marine Oil repeatedly is pumped from and returned to a sump, just as in a car or truck.

You must consider how to select the right type of marine engine oil for your boat, remember using the right type of synthetic marine gear lube for your boat is critical for both performance and lifespan.

How often do I need to change my boat's engine oil?
Just like your car, you need to consider boat oil change. Four-stroke outboards, inboards and sterndrive boats require regular oil changes— how often depends on the model, but a good rule of thumb is to change the oil every 100 hours of operation.

What are the steps to change my marine oil?
If you decide to do it yourself, be sure to follow the engine manufacturer’s instructions: the procedure can vary by engine/manufacturer and is not the same changing the oil on a car. The steps are generally as follows:
  1. Start the engine to warm it up.
  2. Turn off the engine.
  3. Remove the drain plug.
  4. Drain the old oil.
  5. Change the filter.
  6. Replace the drain plug.
Can I use automotive lube for my boat?
Use the right synthetic marine lubricants — Marine lube and auto lube are not interchangeable.

Using automotive lubes for a marine application is bad, because they won’t have the same corrosion and oxidation prevention additives as an oil developed for water-based motors.  These additives matter; they form a “passive” barrier on the interior of your motor which blocks oxidation and corrosion.

Boat engines work much harder than car engines and automotive oil isn’t made to protect marine engines.

What is the difference between automobile oil and marine motor oil?
Consider that corrosion caused by water is a primary concern for marine engines. Oils made for cars are not designed to provide the high level of corrosion protection marine engines require. 

Car oils also fall short in the protection department. Because four-stroke outboard engines run faster than car engines, spend long periods running at extremes of speed and can spend long periods out of use, they have very specific requirements for anti-wear protection that car oils do not provide.

What products does T's Advanced Synthetics have for the marine lube change of my boat?
T's Advanced Synthetics has a synthetic marine engine oil for every type of gear. 2-stroke or 4-stroke, diesel or gasoline. Keep your boat’s engine running cool and smooth all day long. 

During periods of downtime, AMSOIL’s lubricants and fuel additives will keep your engine deposit and rust free with the most sophisticated chemistry available. Protect your investment with AMSOIL products and make sure to do your marine oil change. Find the best boat motor oil in Weeki Wachee, FL!