Pep Boys is normally $6 per bottle. When you figure the mix ratio is 4oz/gallon of distilled water, that's a whole lotta coolant. I've run it on my race mod for a couple of years, actually removed the cooling fan, and have done quite a bit of harescramble training in 95-100 degree heat, the temp gauge stayed at 160. If you couple it's use with a pair of radiator scoops, it really cuts the fan run time down quite a bit. ( that's slow technial woods ridding, out in the open, the fan rarely runs) Along with an infra-red temp gun, gonna do some testing on the inline coolers also. I'll post the results. Gonna try one of those jumbo honkin' units off that company on E-bay.