Maintenance.

Every ISB is designed for simple, easy maintenance with a single spin-on fuel filter with optional heater and water-in-fuel sensor. 15,000-mile (24,000 km) change intervals match the oil and oil filter change schedule (see chart below). You have the option of using either CI-4 oil or CH-4 oil at the stated intervals. If you want to use CG-4 oil, you will have to reduce your drain intervals to 7,500 miles (12,070 km).

ISB Maintenance Intervals.

	Normal Duty
Oil and Filter	15,000 mi. (24,000 km)
Fuel Filter	15,000 mi. (24,000 km)
Coolant Filter	N/A
Valve Adjustment	150,000-mi. (240,000 km) inspection