1991 S-10 Blazer (beast) with 182,000 miles. Depending on whats on sale, but for winter, Synthetic 5w30 (Napa, Havoline, etc), for Summer/spring..Valvoline high mileage or Havoline 5w40 sythetic thanks to big lots.
1997 1/2 Regal GS (supercharged w/ mods a real sleeper). 95,000 miles. M1 or Castro Syntec 10w30 for summer, 5w30 for winter.
2002 Pontiac Montana AWD 27,000 miles (family truckster). Either M1 or Castro Syntec 5w30.
All vehicles usually get their oil changed between 4-5k miles. None of the vehicles burn or use oil, even the Beast.
1997 1/2 Regal GS (supercharged w/ mods a real sleeper). 95,000 miles. M1 or Castro Syntec 10w30 for summer, 5w30 for winter.
2002 Pontiac Montana AWD 27,000 miles (family truckster). Either M1 or Castro Syntec 5w30.
All vehicles usually get their oil changed between 4-5k miles. None of the vehicles burn or use oil, even the Beast.