1987 Chevrolet Sportvan Oil Type & Capacity

It depends on the engine: G10, 4.3 Z, Automatic uses 5W-30; G10, 4.3 Z, Standard, M64 uses 5W-30; G10, 4.3 Z, Standard, MY6 uses 5W-30; G10, 5.0 H uses 5W-30; G10, 5.7 K uses 5W-30; G20, 4.3 Z, Automatic uses 5W-30; G20, 4.3 Z, Standard, M64 uses 5W-30; G20, 4.3 Z, Standard, MY6 uses 5W-30; G20, 5.0 H uses 5W-30; G20, 5.7 K uses 5W-30; G20, 6.2 C, Automatic uses 10W-30; G20, 6.2 C, Standard uses 10W-30; G30, 5.7 K, Automatic uses 5W-30; G30, 5.7 K, Standard uses 5W-30; G30, 6.2 J, 400/M40 uses 10W-30; G30, 6.2 J, 475/M40 uses 10W-30.

Oil capacity depends on the engine: G10, 4.3 Z, Automatic holds 5.0 quarts with filter; G10, 4.3 Z, Standard, M64 holds 5.0 quarts with filter; G10, 4.3 Z, Standard, MY6 holds 5.0 quarts with filter; G10, 5.0 H holds 5.0 quarts with filter; G10, 5.7 K holds 5.0 quarts with filter; G20, 4.3 Z, Automatic holds 5.0 quarts with filter; G20, 4.3 Z, Standard, M64 holds 5.0 quarts with filter; G20, 4.3 Z, Standard, MY6 holds 5.0 quarts with filter; G20, 5.0 H holds 5.0 quarts with filter; G20, 5.7 K holds 5.0 quarts with filter; G20, 6.2 C, Automatic holds 7.0 quarts with filter; G20, 6.2 C, Standard holds 7.0 quarts with filter; G30, 5.7 K, Automatic holds 5.0 quarts with filter; G30, 5.7 K, Standard holds 5.0 quarts with filter; G30, 6.2 J, 400/M40 holds 7.0 quarts with filter; G30, 6.2 J, 475/M40 holds 7.0 quarts with filter.

Most 1987 Chevrolet Sportvan owners follow a 5,000–7,500 mile interval with conventional oil, or up to 10,000 miles with full synthetic. Always check the oil life monitor if equipped, and consult your owner's manual — Chevrolet recommends intervals based on driving conditions, not just mileage.

Yes. 5W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1987 Chevrolet Sportvan. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.