Premix at the pump

WE3RX7 · 12-16-2008, 11:54 AM

^^ Exactly, you got to it before me,lol.

Adding the oil last and relying on the return system isn't the best circulation method for a few reasons. Big one as classicauto mentions is because of the filler neck design. The other is you won't get proper mixing due to the baffle design in the tank. Not to mention, for anybody running only Premix and not using the OMP with it, that time it takes to mix what was in the baffle near the pickup may result in pulling in fuel w/ no oil at all and if your on the track at 5K+ RPM and pulling in fuel that hasnt been fully mixed yet, your causing damage, ableit slowly to your engine.

The best solution really is to premix in the can and then add to your tank, but thats a luxury many of us dont have, so at least put the oil in first and let it slosh around a bit. I even go as far as rocking my car around a bit before driving when filling up from an empty tank, just to make sure it all gets into the baffles appropriately.

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

12-16-2008, 11:54 AM	#1
WE3RX7 RCC Addict Join Date: Feb 2008 Location: VA Posts: 1,812 Rep Power: 19	^^ Exactly, you got to it before me,lol. Adding the oil last and relying on the return system isn't the best circulation method for a few reasons. Big one as classicauto mentions is because of the filler neck design. The other is you won't get proper mixing due to the baffle design in the tank. Not to mention, for anybody running only Premix and not using the OMP with it, that time it takes to mix what was in the baffle near the pickup may result in pulling in fuel w/ no oil at all and if your on the track at 5K+ RPM and pulling in fuel that hasnt been fully mixed yet, your causing damage, ableit slowly to your engine. The best solution really is to premix in the can and then add to your tank, but thats a luxury many of us dont have, so at least put the oil in first and let it slosh around a bit. I even go as far as rocking my car around a bit before driving when filling up from an empty tank, just to make sure it all gets into the baffles appropriately.