26.07.2002, 09:51
Quote Oldvetter vom US-Forum:
<<"Low temperature thermostats can harm your engine. In the first place, they only produce more horsepower by fooling your computer into thinking the engine is not warmed up, thus it sets a richer fuel mixture (i.e. more gas), much like running with a choke on.
It's bad for your engine in several ways: 1) running rich can flush lubricant from cylinder walls, resulting in poor lubrication, 2) current oils are meant to run hot, 220 F and more, so they burn off any fuel/other impurities, lower thermostats will not let you burn off these, this results in poor lubrication, 3) engines are designed to run at certain temperatures, with tolorances, running at other temperatures is not optimum (especially true with an aluminum engine), this is one reason they tell you to wait until your car is warmed up before "getting on it", with a lower thermostat you're never warmed up, 4) varible weight oils (i.e. 10W-30, thicken as the temperature rises, run them cooler and they are thinner, with less protection.
Of course running more horsepower with less lubrication is a prescription for trouble. ">>
Hmmm... was soll ich davon halten? Im US-Forum gibt es einen aktuellen Thread über das Thema:
Does a 160 Thermostat harm?
Die Meinungen sind sehr unterschiedlich.
Gruß
Toby
<<"Low temperature thermostats can harm your engine. In the first place, they only produce more horsepower by fooling your computer into thinking the engine is not warmed up, thus it sets a richer fuel mixture (i.e. more gas), much like running with a choke on.
It's bad for your engine in several ways: 1) running rich can flush lubricant from cylinder walls, resulting in poor lubrication, 2) current oils are meant to run hot, 220 F and more, so they burn off any fuel/other impurities, lower thermostats will not let you burn off these, this results in poor lubrication, 3) engines are designed to run at certain temperatures, with tolorances, running at other temperatures is not optimum (especially true with an aluminum engine), this is one reason they tell you to wait until your car is warmed up before "getting on it", with a lower thermostat you're never warmed up, 4) varible weight oils (i.e. 10W-30, thicken as the temperature rises, run them cooler and they are thinner, with less protection.
Of course running more horsepower with less lubrication is a prescription for trouble. ">>
Hmmm... was soll ich davon halten? Im US-Forum gibt es einen aktuellen Thread über das Thema:
Does a 160 Thermostat harm?
Die Meinungen sind sehr unterschiedlich.
Gruß
Toby