[MrBonus]

Originally Posted by Sunroof

Porsche put out a bulletin decades ago about the benefit of using Chevron Techron, which was the first cleaner on the market back then. I believe one caveat was to get the oil changed within 500-1,000 miles of use to reduce any impacts on seals. Techron cleans the injectors, weeps past the rings as it cleans the cylinders and stays in the oil pan until removed. It thins out the oil and you can smell it on the dipstick........and it WORKS!!!

I owned a 1985.5 Porsche 944 and sold it to my mechanic with 365,000 miles logged on the odometer. The only repair to the engine in all that mileage was a blown head gasket. I attribute the engine life to Chevron Techron. From my experience, a good practice is to add a 20 ounce bottle to 1/2 tank of gas and just drive! No need to rev it up or bury the needle. I have double dosed (back to back applications) on occasion. I have always praised the benefit of Chevron Techron although SeaFoam and other cleaners may have the same benefit. Many frown on additives and with synthetic oils today, I do not know if Techron acts any differently.

BTW, I have no affiliation with Chevron, do not know anyone who works at Chevron nor own an Auto Parts store or am a Techron Distributor.

Now, how about that COOLER COLLAR?!

Yep, I searched this forum and found that bulletin before picking up a bottle: