Oil Filter Life

[Alex F]

Dennis,

Marinized diesels can usually be rigged with the oil fills on the inboard side. To make that flexibility, there is usually a block off plate on the skirt of the block or a blank flat plate on the back of the timing cover. In either case, it isn't the heat that allows you to drain the added oil more quickly but rather the fact that the oil is poured into the engine right at the pan level so it never runs down thru the engine. You add the extra quart to evacuate the old oil left in the oil change pump and plumbing (nearly a quart on my boat) so you can then use the pump to return fresh oil into the engine via reversing the pump.....hence the name REVERSO.

The only exception may be on certain engines where the oil fill is located in the valve cover.

I think I see where our different method comes in to play. I fill the oil from the top, not via reverso pump. I only use the pump to drain the old oil. So, this is the reason I wait longer for the oil to make it's way from the very top to the bottom of the pan.

[fwebster]

No Alex. You missed my point. On your engines, the oil goes in right at the oil pan thru the oil fill fitting. There is no need to wait 30 minutes because you are pouring it in at the bottom of the engine, not the top where the fresh oil must run thru oil galleries to get to the pan, but you should still do it your way..........

[Alex F]

Oh, I see what you mean. But, I just remember that when it's quite I can hear the oil drip while making it's way to the bottom. I agree that 30min is an overkill. I don't use stopwatch and just picked an approximate time frame. In reality, I'm multitasking and the interval of 10, 15 or 30min really doesn't mater that much. While the oil makes it's way down I do other stuff. Then, when I feel that it's sufficient, I'm back doing the oil change stuff.

[Lazy Daze]

Dennis,

Marinized diesels can usually be rigged with the oil fills on the inboard side. To make that flexibility, there is usually a block off plate on the skirt of the block or a blank flat plate on the back of the timing cover. In either case, it isn't the heat that allows you to drain the added oil more quickly but rather the fact that the oil is poured into the engine right at the pan level so it never runs down thru the engine. You add the extra quart to evacuate the old oil left in the oil change pump and plumbing (nearly a quart on my boat) so you can then use the pump to return fresh oil into the engine via reversing the pump.....hence the name REVERSO.

The only exception may be on certain engines where the oil fill is located in the valve cover.

I had a feeling that's what you where referring to, but I didn't realize all (or most) marine diesels where set up to fill directly (basically) into the pan. I wonder what the rationale is? Is it with installation requirements in mind (limited overhead access in certain boats)?

[fwebster]

Diesel engine makers don't know if an engine will be mounted in a tractor, a generator, a dozer, a boat or a crane, so they make them highly customizable. The marinizers can set them up with all the service points on the inside, which is on opposites sides of the 2 engines. The usual spot for pouring in oil is on the skirt of the block with a bolt on plate on one side and a different plate in maybe a different spot on the other one. It makes it a lot easier and cheaper than putting the oil access up high on the engine.

[Russ Calasant]

There's an oil fill on the pan?! That would make sense. I wondered about the old oil in the pump system, so I looked to try to pour from the top of the motor, didn't work out well so I just pumped it as is.