1995 GMC C3500 HD Oil Type & Capacity
The 1995 GMC C3500 HD oil type depends on the engine: the 6.5 F, Automatic takes 10W-30 (7.0 quarts qt with filter); the 6.5 F, Standard takes 10W-30 (7.0 quarts qt with filter); the 7.4 N, Automatic takes 10W-30 (8.0 quarts qt with filter); the 7.4 N, Standard takes 10W-30 (8.0 quarts qt with filter), per the factory service manual.
Factory-spec answer
It depends on the engine:
- 6.5 F, Automatic: 10W-30, 7.0 quarts with filter
- 6.5 F, Standard: 10W-30, 7.0 quarts with filter
- 7.4 N, Automatic: 10W-30, 8.0 quarts with filter
- 7.4 N, Standard: 10W-30, 8.0 quarts with filter
Oil capacity by engine
| Engine | Oil Type (viscosity) | Capacity w/ Filter | Capacity w/o Filter | Notes |
|---|---|---|---|---|
| 6.5 F, Automatic — 6.5L Eng | API - 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) | 7.00 QTS. | — | — |
| 6.5 F, Standard — 6.5L Eng | API - 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) | 7.00 QTS. | — | — |
| 7.4 N, Automatic — 7.4L Eng | API - 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) | 8.00 QTS. | 7.00 QTS. | — |
| 7.4 N, Standard — 7.4L Eng | API - 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) | 8.00 QTS. | 7.00 QTS. | — |
Complete Oil Change Bundle for 1995 GMC C3500 HD
Everything you need delivered in one order. Pre-matched to your factory spec (10W-30, 7.0 quarts).
As an Amazon Associate we earn from qualifying purchases. Prices shown are real-time retail estimates.
Buy the right oil & filter for your C3500 HD
🛒 Buy 10W-30 Full Synthetic Oil (7.0 quarts needed) on Amazon💡 Capacity Note: Your 1995 GMC C3500 HD holds 7.0 quarts with filter. Since standard jugs are 5 quarts, be sure to pick up extra 1-quart bottles or a 2-pack to reach the full mark on the dipstick.
Popular Full Synthetic Brands (10W-30):
As an Amazon Associate we earn from qualifying purchases made through these links.
More factory specs & repair guides for your C3500 HD
🛞 1995 GMC C3500 HD Tire Size & Pressure →🌧️ 1995 GMC C3500 HD Wiper Blade Sizes →💡 1995 GMC C3500 HD Light Bulb Sizes →📖 1995 GMC C3500 HD Factory Service Manual →All fluid capacities (transmission, coolant, brakes)Powered by factory manual data from our partner network AllOEMManuals.com.
Coolant capacity
26.5 quarts (25.07 L) — 50/50 mixture of DEX-COOL and clean water (preferably distilled)
Frequently asked questions
What type of oil does a 1995 GMC C3500 HD take?
It depends on the engine: 6.5 F, Automatic uses 10W-30; 6.5 F, Standard uses 10W-30; 7.4 N, Automatic uses 10W-30; 7.4 N, Standard uses 10W-30.
What is the oil capacity of a 1995 GMC C3500 HD?
Oil capacity depends on the engine: 6.5 F, Automatic holds 7.0 quarts with filter; 6.5 F, Standard holds 7.0 quarts with filter; 7.4 N, Automatic holds 8.0 quarts with filter; 7.4 N, Standard holds 8.0 quarts with filter.
How often should I change the oil in my 1995 GMC C3500 HD?
Most 1995 GMC C3500 HD 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 — GMC recommends intervals based on driving conditions, not just mileage.
Can I use synthetic oil in my 1995 GMC C3500 HD?
Yes. 10W-30 is widely available as a full synthetic, and synthetic is safe (often recommended) for the 1995 GMC C3500 HD. What matters most is matching the factory viscosity and specification, then changing the oil and filter on schedule.