Reverso Pumps Blog

Q: Is the GP-311P suitable to use on diesels that has about 80 liters of oil to change? Do you recomend running the engine before pumping oil out using the GP-311P?

A: The GP-311P is a very capable pump and would easily drain 80 liters of oil from the engine. The engine should be run until the oil temperature reaches about 110 to 120'f (43-48'c) as a matter of practice. This does two things.

First it circulates the oil and causes the dirt in the bottom of the sump to go into suspension. This allows the dirt to be removed and not left behind.

Second it makes the oil flow much easier and will drain quicker.

The pump is capable of 3.5 gpm (13 lpm) and won't take long to drain. The cold oil going back in will take a little longer but will do the job.

Keep in mind that the 13 lpm rating is providing that the oil is being drawn through the large hose that comes with the unit. If you intend to use the dip stick wand, it will be reduced to less than half the flow and will take much longer.

Q: "If I purchase a 4 port oil changer, can two lines be used for engine coolant and 2 for oil. Thanks Mike"

A: Good question. While the pump is quite capable of pumping both coolant and oil, it is not recommended using the same system to do both. The probability of cross contamination is so great that you could conceivably ruin an engine or cooling system causing yourself a great deal of expense.

We highly recommend against it. You would be ahead of the game by installing a GP3012 oil change system, then using a GP311 pump with a VP2 valve manifold to change the coolant. This will keep the two systems separate and eliminate the possibility of any contamination.

Question - "I have just purchased a new boat and have requested to install a REVERSO pump system for the main engine, generator and transmission. The boat builder representative is telling me he can only install it for the engine and the generator, the reason being given to me is the possibility of engine oil and transmission oil contamination. I am a bit skeptical on his contamination concern. Could you help me on that issue please?"


Answer - Your representative could be right. On some of the newer vessels the transmission requires a more refined oil than that of the engine or generator. With our GP-3013, a 3 valve oil change system, there is the possibility of cross-contamination. If your transmission requires the more refined oil, and it is contaminated with engine oil, it could cause damage to the transmission. Typically, we have seen these new transmissions on the new, high performance vessels.

We would suggest that you confirm the oil requirements of your transmission. If it requires, for example, a 30W, like the engine, then you should have no problem using a 3-valve system with no worry of cross-contamination.   If you find that you need a different oil for the transmission, you can use our GP-3012, a 2-valve oil change system, for your engine and generator.  Then use our GP-311 or OP-6, reversible pump, solely for the transmission.

You can find the products mentioned above by clicking on the product names below:

GP-3013
GP-3012
GP-311
OP-6