Engine Oil Specification
Verified OEM & Service Reference1985 Chevrolet Silverado 1500 5.3L EcoTec3 V8 (L84) — Engine Oil
Recommended interval: Every 5,000–7,500 miles (8,000–12,000 km) or 6–12 months
Engine / Trim Variant
OEM Oil Spec
dexos1 Gen 3
Quick Purchase
Check verified fitment on Amazon
Technical Specifications
| Recommended Viscosity | 0W-20 |
|---|---|
| OEM Specification | dexos1 Gen 3 |
| Oil Capacity | 8.0 qt (7.6L) |
| Drain Plug Torque | 18 ft-lb (25 Nm) |
| Drain Plug Size | 15mm |
Compatible Aftermarket Options
Direct OEM cross-referencesNo aftermarket cross-reference listed yet. Search directly for compatible engine oil options:
Search 1985 Chevrolet Silverado 1500 5.3L EcoTec3 V8 (dexos1 Gen 3) on AmazonEngine Oil Fitment by Engine / Trim (1985 Chevrolet Silverado 1500)
| Engine / Trim | Oil Spec & Capacity | OEM Oil Filter |
|---|---|---|
| 5.3L EcoTec3 V8 | 0W-20 • 8.0 qt (7.6L) | 12706595 (PF63) |
| 6.2L EcoTec3 V8 | 0W-20 • 8.0 qt (7.6L) | 12706595 (PF63) |
| 3.0L Duramax Turbo-Diesel | 0W-20 • 7.0 qt (6.6L) | 55495105 (PF66) |
DIY Fitment & Verification Checklist for 1985 Chevrolet Silverado 1500
- Confirm your engine code or trim variant above before ordering parts, as mid-year production changes can affect engine oil fitment.
- When purchasing OEM or aftermarket brands (Motorcraft, ACDelco, Mopar, Wix, Fram, Mobil 1, Bosch, NGK), cross-check the Amazon Garage Confirmed Fit badge with your 17-digit VIN.
- Always consult your 1985 Chevrolet Silverado 1500 owner's manual for exact torque specs and fluid service intervals.
Sources: NHTSA vPIC & OEM Service SpecificationsReport an inaccurate spec or part number
Frequently Asked Questions
What is the OEM engine oil specification for a 1985 Chevrolet Silverado 1500?
The primary OEM engine oil part number / specification for the 1985 Chevrolet Silverado 1500 5.3L EcoTec3 V8 (L84) is dexos1 Gen 3.
Which aftermarket engine oil brands fit the 1985 Chevrolet Silverado 1500?
Use your 17-digit VIN to confirm direct-fit aftermarket engine oil replacements on Amazon.