2004 GMC Envoy XL 4200-I6, 37,000 miles
Castrol Syntec 5W-30
Mobil One Filter
Every 6 months or "OLM"
1990 Chevy C1500 350 TBI, 108,000 original miles
Castrol High Mileage 10W-30
K&N Filter
Every 4 months
2003 Saturn Vue 3.0-V6, 38,000 miles
Castrol Syntec 5W-30
Pure One Filter
"OLM" only
2008 Nissan Versa 1.8-I4, 40,000 miles
Pennzoil Platinum 5W-30
K&N Filter
Every 5,000 miles
2004 Chrysler Sebring 2.7-V6, 47,000 miles
Castrol GTX 5W-30
NAPA Gold Filter
Every 3 months or 3,000 miles
2006 GMC K1500 5.3-V8, 71,000 miles
Castrol Syntec 5W-30
NAPA Gold Filter
Every 6 months or "OLM"
1985 Chevrolet C-10 355, 7200 miles on engine
Castrol Tection 15W-40
NAPA Gold Filter
Each Spring & Fall