1985 Chevrolet S10 Blazer Oil Type & Capacity
The 1985 Chevrolet S10 Blazer oil type depends on the engine: the 2.5 E, 4WD, Automatic takes 10W-30 (3.0 quarts with filter); the 2.5 E, 4WD, Standard, MC9 takes 10W-30 (3.0 quarts with filter); the 2.5 E, 4WD, Standard, ML2 takes 10W-30 (3.0 quarts with filter); the 2.5 E, RWD, Automatic takes 10W-30 (3.0 quarts with filter); the 2.5 E, RWD, Standard, MC9 takes 10W-30 (3.0 quarts with filter); the 2.5 E, RWD, Standard, ML3 takes 10W-30 (3.0 quarts with filter); the 2.8 B, 4WD, Automatic takes 5W-30 (3.0 quarts with filter); the 2.8 B, 4WD, Standard, MB1 takes 5W-30 (3.0 quarts with filter); the 2.8 B, 4WD, Standard, MC9 takes 5W-30 (3.0 quarts with filter); the 2.8 B, RWD, Automatic takes 5W-30 (3.0 quarts with filter); the 2.8 B, RWD, Standard, MB1 takes 5W-30 (3.0 quarts with filter); the 2.8 B, RWD, Standard, MC9 takes 5W-30 (3.0 quarts with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- 2.5 E, 4WD, Automatic: 10W-30, 3.0 quarts with filter
- 2.5 E, 4WD, Standard, MC9: 10W-30, 3.0 quarts with filter
- 2.5 E, 4WD, Standard, ML2: 10W-30, 3.0 quarts with filter
- 2.5 E, RWD, Automatic: 10W-30, 3.0 quarts with filter
- 2.5 E, RWD, Standard, MC9: 10W-30, 3.0 quarts with filter
- 2.5 E, RWD, Standard, ML3: 10W-30, 3.0 quarts with filter
- 2.8 B, 4WD, Automatic: 5W-30, 3.0 quarts with filter
- 2.8 B, 4WD, Standard, MB1: 5W-30, 3.0 quarts with filter
- 2.8 B, 4WD, Standard, MC9: 5W-30, 3.0 quarts with filter
- 2.8 B, RWD, Automatic: 5W-30, 3.0 quarts with filter
- 2.8 B, RWD, Standard, MB1: 5W-30, 3.0 quarts with filter
- 2.8 B, RWD, Standard, MC9: 5W-30, 3.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 2.5 E, 4WD, Automatic — 2.5L Eng | SAE 10W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), SAE 30 (Above 32Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| 2.5 E, 4WD, Standard, MC9 — 2.5L Eng | SAE 10W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), SAE 30 (Above 32Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| 2.5 E, 4WD, Standard, ML2 — 2.5L Eng | SAE 10W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), SAE 30 (Above 32Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| 2.5 E, RWD, Automatic — 2.5L Eng | SAE 10W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), SAE 30 (Above 32Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| 2.5 E, RWD, Standard, MC9 — 2.5L Eng | SAE 10W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), SAE 30 (Above 32Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| 2.5 E, RWD, Standard, ML3 — 2.5L Eng | SAE 10W-30 (Below 0Deg.F to 60Deg.F), 15W-40 (0Deg.F to Above 100Deg.F), SAE 30 (Above 32Deg.F to Above 100Deg.F) | 3.00 QTS. | — | — |
| 2.8 B, 4WD, Automatic — 2.8L Eng | SAE 5W-30 (Below -20Deg.F to 100Deg.F), 10W-30 (Above 0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20 (20Deg.F to over 100Deg.F), SAE 30 (40Deg.F to | 3.00 QTS. | — | — |
| 2.8 B, 4WD, Standard, MB1 — 2.8L Eng | SAE 5W-30 (Below -20Deg.F to 100Deg.F), 10W-30 (Above 0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20 (20Deg.F to over 100Deg.F), SAE 30 (40Deg.F to | 3.00 QTS. | — | — |
| 2.8 B, 4WD, Standard, MC9 — 2.8L Eng | SAE 5W-30 (Below -20Deg.F to 100Deg.F), 10W-30 (Above 0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20 (20Deg.F to over 100Deg.F), SAE 30 (40Deg.F to | 3.00 QTS. | — | — |
| 2.8 B, RWD, Automatic — 2.8L Eng | SAE 5W-30 (Below -20Deg.F to 100Deg.F), 10W-30 (Above 0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20 (20Deg.F to over 100Deg.F), SAE 30 (40Deg.F to | 3.00 QTS. | — | — |
| 2.8 B, RWD, Standard, MB1 — 2.8L Eng | SAE 5W-30 (Below -20Deg.F to 100Deg.F), 10W-30 (Above 0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20 (20Deg.F to over 100Deg.F), SAE 30 (40Deg.F to | 3.00 QTS. | — | — |
| 2.8 B, RWD, Standard, MC9 — 2.8L Eng | SAE 5W-30 (Below -20Deg.F to 100Deg.F), 10W-30 (Above 0Deg.F to over 100Deg.F), 15W-40 (10Deg.F to over 100Deg.F), 20W-20 (20Deg.F to over 100Deg.F), SAE 30 (40Deg.F to | 3.00 QTS. | — | — |
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More specs & repair guides for your S10 Blazer
1985 Chevrolet S10 Blazer factory service manualAll fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner site AllOEMManuals.com.
Coolant capacity
12.0 quarts (11.35 L) — 50/50 mixture of Ethylene Glycol Base Antifreeze and water. GM Specification 1825-M.
Frequently asked questions
What type of oil does a 1985 Chevrolet S10 Blazer take?
It depends on the engine: 2.5 E, 4WD, Automatic uses 10W-30; 2.5 E, 4WD, Standard, MC9 uses 10W-30; 2.5 E, 4WD, Standard, ML2 uses 10W-30; 2.5 E, RWD, Automatic uses 10W-30; 2.5 E, RWD, Standard, MC9 uses 10W-30; 2.5 E, RWD, Standard, ML3 uses 10W-30; 2.8 B, 4WD, Automatic uses 5W-30; 2.8 B, 4WD, Standard, MB1 uses 5W-30; 2.8 B, 4WD, Standard, MC9 uses 5W-30; 2.8 B, RWD, Automatic uses 5W-30; 2.8 B, RWD, Standard, MB1 uses 5W-30; 2.8 B, RWD, Standard, MC9 uses 5W-30.
How much oil does a 1985 Chevrolet S10 Blazer take?
Capacity depends on the engine: 2.5 E, 4WD, Automatic holds 3.0 quarts with filter; 2.5 E, 4WD, Standard, MC9 holds 3.0 quarts with filter; 2.5 E, 4WD, Standard, ML2 holds 3.0 quarts with filter; 2.5 E, RWD, Automatic holds 3.0 quarts with filter; 2.5 E, RWD, Standard, MC9 holds 3.0 quarts with filter; 2.5 E, RWD, Standard, ML3 holds 3.0 quarts with filter; 2.8 B, 4WD, Automatic holds 3.0 quarts with filter; 2.8 B, 4WD, Standard, MB1 holds 3.0 quarts with filter; 2.8 B, 4WD, Standard, MC9 holds 3.0 quarts with filter; 2.8 B, RWD, Automatic holds 3.0 quarts with filter; 2.8 B, RWD, Standard, MB1 holds 3.0 quarts with filter; 2.8 B, RWD, Standard, MC9 holds 3.0 quarts with filter.
Can I use synthetic oil in my 1985 Chevrolet S10 Blazer?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1985 Chevrolet S10 Blazer. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.