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I'm thinking about running 1/3rd bottle though my air intake probably though the pcv line, and 1/3rd bottle in my oil case. Then running the car for about ten miles and changing the oil. Any advice? I've heard rave reviews on this stuff but never tried it before...

I've used Royal Purple in the past and have really liked it but I've allways wondered if the chemical in the dye is bad in any way for your engine even though it burns out quickly?

I'm using Mobil1 Extended Performance. It claims to have 50 percent more SuperSyn than regular Mobil 1. What is 'SuperSyn'?

I've got a 99 Mustang GT with your average bolt-ons. I drag race it on weekends when I can and generally drive it pretty hard during the week. It gets driven about 35 miles a day. The car has a modular 281 SOHC 2V engine with 69,000 miles. My altitude is 4200 feet with 4 seasons(SLC UT) extremes...