Part Number: 4021
Category: Pressure Washer Parts → Pump Maintenance → Pump Oil & Lubricants
Type: OEM General Pump Oil – 6 Pack of 16 oz Bottles

The CASE General Pump Oil (Part #4021) is a genuine OEM lubricant specifically formulated for General Pump high-pressure pump systems. This convenient case includes six (6) 16-ounce bottles, providing the proper lubricant for routine maintenance, scheduled oil changes, and long-term pump protection.

Key Features & Benefits

• Genuine OEM General Pump lubricant
• Part Number: 4021
• Includes 6 bottles, each containing 16 oz of pump oil
• Formulated specifically for General Pump equipment
• Helps reduce friction and internal component wear
• Promotes smooth, efficient pump operation
• Supports extended pump service life
• Ideal for routine preventive maintenance
• Helps maintain OEM performance standards
• Suitable for commercial and industrial pressure washer systems

Technical Specifications

Part Number: 4021

Product Type: Pump Oil / Equipment Lubricant

Manufacturer: General Pump

Quantity: 6 Bottles

Bottle Size: 16 oz each

Total Volume: 96 oz

OEM Replacement: Yes

Compatible Applications

Designed for use with compatible General Pump high-pressure pump systems used in:

• Commercial pressure washers
• Industrial pressure washing equipment
• Pump maintenance programs
• Preventive maintenance schedules
• Equipment service departments
• High-pressure cleaning systems

Function of General Pump Oil

General Pump Oil helps:

• Lubricate internal pump components
• Reduce friction during operation
• Protect bearings, seals, and moving parts
• Minimize wear under high-pressure conditions
• Promote cooler operating temperatures
• Extend overall pump life
• Maintain reliable pump performance

Using genuine OEM lubricant helps ensure proper pump protection while maintaining the performance standards specified by General Pump.

Common Signs Pump Oil Should Be Replaced

Replace pump oil according to the manufacturer's recommended maintenance schedule or if you notice:

• Dark or contaminated oil
• Milky or water-contaminated lubricant
• Metal particles in the oil
• Reduced pump performance
• Increased operating temperature
• Excessive pump noise
• Oil that has exceeded its recommended service interval

Regular oil changes help protect internal pump components and reduce the risk of premature wear.

Installation & Service Notes

• Shut down the equipment and relieve all system pressure.
• Allow the pump to cool before servicing.
• Drain the existing pump oil completely.
• Refill with the recommended amount of genuine General Pump Oil.
• Verify the oil level according to the pump manufacturer's specifications.
• Dispose of used oil in accordance with local environmental regulations.

Important: Always follow the maintenance intervals outlined by the pump manufacturer. Using genuine OEM General Pump lubricant helps ensure maximum equipment reliability and long service life.

Maintenance Recommendations

• Check pump oil level regularly.
• Replace oil at the manufacturer's recommended service intervals.
• Inspect oil for contamination during routine maintenance.
• Address leaks promptly to prevent lubricant loss.
• Use only genuine OEM General Pump lubricants for optimum pump protection and performance.