wizard993 said:I have switched completely to the Total Porsche Approved Oil. Indications are that it keeps the 996/997.1 engine slightly cooler. I also use the GT2/turbo thermostat on the 997.1. It runs a shade cooler now. Each week/fortnight I scoop out front rad debris(next doors 7 year-old helps...errr well he often does it, as his small arms and fingers are ideal for getting to the rads. He is happy with a mars bar as his reward: thumb:
Budget(£350-£400) + VAT supplied and fitted for the thermo upgrade at any decent Indy(inc coolant).
What is the part number for the thermostat you got m8?
Is the one Hartech sell something different again?