Alex F
Well-Known Member
- Nov 14, 2006
- 9,166
- Boat Info
- 2005 420DB with AB 11 DLX Tender, Raymarine Electronics (2x12" MFDs) with Vesper AIS
- Engines
- Cummins 450Cs, 9KW Onan Generator, 40HP Yamaha for tender.
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.