I HAVE USED MMO IN THE PAST ON A REGULAR BASIS IN MY FUEL TANK BUT I GOT TIRED OF MEASURING OUT DOSES OF 4OZ PER 10 GALLONS. I STOPED USING IT AND FOUND NO DIFFERENCE AT ALL BETWEEN ME USING IT IN THE FUEL TANK AND NOT. MY QUESTION IS THERE A BENEFIT OF USING IT IN YOU ENGINE OIL? ESPECIALLY USING IT DOWN HERE IN GEORGIA WHEN THE SUMMER MONTHS ARE COMING WITH TEMPS RAISING CLOSE TO 100F. I ALREADY USE MOBIL 1 10W30 SO WOULD IT HELP ANYTHING TO USE IT OR IS IT POINT LESS. I HEARD IT IS PRETTY POINT LESS BECAUSE IT IS MORE DESIGNED TO PROTECT IN THE COLD NOT THE SUMMER. WHAT DO YOU ALL THINK?