2 yrs. or 25000 mi.
Yes, the faulty power steering pressure switch does affect the gas mileage. It will give a wrong reading of the gas mileage. It is therefore important to fix it when it is faulty.
Yes, if the coolant is still clean and has not been in the system for long. But if you are changing the coolant at the recommended mileage of your cars manual then it should not be reused.
high mileage transmission fluid probably
In fact I would advise against it on a high mileage transmission.
better gas mileage
The gas mileage of a 1981 Corvette can depend on whether it is automatic or manual transmission. With automatic transmission, it gets 15 mpg on the highway, and 21 in the city, but with manual transmission, it gets 14 mpg on the highway, and 22 in the city.
You will get lower gas mileage. The tcc solenoid locks up the transmission to get better gas mileage at higher speeds. I suppose it will wear the transmission slightly faster as well, but the main effect is lower gas mileage.
BMW does not have a recommended millage for a transmission service on a 1997 540-I.
MT stands for Manual Transmission and AT stands for Automatic Transmission.
ECM mileage is based on the number of transmission output shaft rotations, and is calculated along with the programmed rear end gear ratio, transmission gear ratios, and revolutions per mile for the programmed tire size. Actual mileage will vary according to tire wear... as your tires wear down, the actual mileage you travel will decrease.
35000 to 60000 depending on city or hiway miles
every 20,000 miles