10w30 any major brand. I recommend you use an AC/Delco, Purolator, Wix, or Bosch filter.
The 1988 Pontiac Bonneville originally used R12 freon, this freon is no longer available due to government regulation. Your A/C system must have it's A/C service ports replaced. Then the system filled with the correct amount of R134a freon.
What type of antifreeze do I use for a 2000 bonneville
What type of antifreeze do I use for a 2000 bonneville
Pontiac oil pressure can be tricky! Check with your mechanic first but from my experience with my Pontiac use 10w-40 oil in the winter and 20w-50 in the summer. That has produced better pressure in mine.
R134a
If you mean 5w20 synthetic the answer is NO. Pontiac recommends SAE 10w30 weight oil in Synthetic or Conventional. Use exactly that weight.
The rotor thickness for your 1997 Pontiac Bonneville is 0.75. When the rotor falls below this thickness a certified mechanic can no longer use the rotor.
Dextron III any brand.
The 2002 Bonneville with a 3.8l engine has the thermostat in the top radiator hose inlet. A different engine any use a different location.
SAE 10w30 any premium brand.
it shouldn't use any
The 2000 Pontiac Bonneville takes a 22" wiper blades on both sides front. However, when buying windshield wiper blades be sure to always use the application guide book at the store. The replacement wiper blades will come with step-by-step, illustrated instructions.