HI TY, YUP...THAT ANSWERED MY QUESTION PERFECTLY. JUST AS I 'KINDA' FIGURED. I'M GOING WITH THE HIGH 'VOLUME' PUMP. I WAS ALSO WONDERING IF THIS IS TRUE OR NOT. CAN A HIGH PRESSURE PUMP PUT MORE AIR BUBBLES IN THE OIL AND MAKE IT KINDA FOAM UP AND BREAK DOWN THE OIL FASTER. THANKS AGAIN AND TAKE CARE........DENNIS