To choose the right viscosity grade you must consider the temperature in which you drive you van. The use of SAE 5W-30 oil is preffered for all temperatures however SAE 10W-30 is acceptable for moderate to hot temperatures>
In a 1997 Ford Aerostar : Refrigerant 134a is used
5W-30
R-12.
A Ford Aerostar would have come from the factory with a 50 / 50 mix of distilled water and GREEN color antifreeze ( meeting Ford specification ESE-M97B44-A )
No , both the 3.0 and 4.0 liter Over Head Valve ( OHV ) engines used in a 1996 Ford Aerostar use ( 1 ) timing CHAIN
Too the best of my knowledge, no. The 1991 used a sealed beam and the 1997 used a halogen type.
On a 1995 Ford Aerostar : If it is the 4.0L EFI V6 engine ( like my 1995 Ford EXPLORER ) it has an " O " ring for the thermostat , there is no gasket But , if it is the 3.0L V6 engine I believe a thermostat gasket is used
There is just ( 1 ) timing chain on the 4.0 liter OHV engine used in a 1992 Ford Aerostar In 1997 Ford started using the 4.0 liter SOHC engine in some of their vehicles that has ( 3 ) timing chains
No. From 1983-84 Ford used the C3 transmission. A 1990 will not fit.
R12, which is very expensive. Have it changed over to a newer refrigrant.
According to the 1997 Ford Aerostar Owner Guide : ( Motorcraft MERCON automatic transmission fluid is used as the power steering fluid )
An A/C shop will know. The leak must be repaired before adding refrigerant.