HS1370

The one time event isn't the reason that we were sold on the Dumonde Tech oil, we were sold on them before. We had lots of feedback from others and having met Rod we were pretty confident in his oil. This was just a validation for us. We were running the engine pretty hard, about 6200 RPM under load and not on a stand with a garden hose. The RPM drop between the two engines was what got our attention, so by that time it had probably been run for several minutes on a saltwater oil mix.

I'm pretty much sold on synthetics, or at least one brand of synthetic oil. Four or so years ago two friends and myself were running my friends boat in a local off shore race. The block failed where it had been clearanced for the connecting rods. By the time we got it shut down we ended up with a motor full of salt water and 15-20 gallons of oil/water that had been pumped out the breather into the bilge. It was a couple of days before we tore the motor down, we weren't in a big hurry since we figured the whole motor was junk. Except for the crack in the block the motor looked perfect, bearings were fine, cylinder walls etc. My friend was using a oil made by Dumonde Tech. The guy that owns Dumonde Tech has been engineering specialty oils for racing and for the oil companies for a lot of years. The stuff isn't cheap but in this case it sure seems to have been worth it. I'm new to the forum, you've got a great site. Lot's of great info. for when I'm finally done collecting parts and get around top putting a 4.3 chevy into my 70 240.