Change it every 5,000 miles if you use conventional oil or every 7,500 if you use synthetic oil. Also change the filter at every oil change.
Pool motor is overheating and or a short in the motor. You need a professional pool tech to troubleshoot.
If the motor is connected to a VFD the conductors of the motor need not be changed. The phase reversal can be done with the VFD's internal circuitry.
Models need to be changed as often as deemed necessary by the market. Different types of models need to be changed at different times.
The 2UZ-FE motor does not have a timing chain but a timing belt and it should be changed between 90k and 100k miles along with the water pump.
A motor from a 1991 Oldsmobile will fit into a 1996 Oldsmobile Delta 88. The motor mounts will need to be changed.
A 2003 Dodge motor will fit in a 2002 Dodge Durango. The motor mounts may need to be changed, in order for the engine to sit correctly.
5yr/72000mls
every 100,000 km
Must be changed every 60,000 miles.
The engine oil should be changed at least every 3,000 miles on a 1985 Toyota Tercel. An automobile this old should also have the oil and air filters changed at the same time for the motor to run move efficiently.
If you have a high pressure tanning bed bulb, it will need to be changed after about 1000 hours of use. Low pressure bulbs may need to be changed as frequently as every 600 hours.
every 70000 miles