



TriboDyn Tri-Guard 2100 Piston Synthetic Diester Compressor Oil
30-Day Returns • Free U.S. Shipping • Same-Day Shipping (by 2:30 PM EST)
Volume Pricing Available
Orders of 3 or more gallons or cases automatically receive an EXTRA 10% OFF. No promo code needed.
TriboDyn Tri-Guard 2100 Diester ISO 100 Piston Compressor Oil
TriboDyn Tri-Guard 2100 is a synthetic diester ISO 100 compressor oil specifically formulated for reciprocating piston air compressors. Diester base oils offer superior thermal stability, excellent solvency, and strong resistance to carbon and varnish buildup — making them ideal for the high-temperature, high-load conditions found in piston compressors.
This non-detergent formulation delivers an 8,000+ hour service life, keeps valves, rings, and cylinders cleaner than conventional mineral oils, and provides outstanding anti-wear, rust, and corrosion protection. It performs reliably across a wide temperature range with a flash point of 244°C and pour point of -43°C.
Key Benefits:
- Synthetic diester ISO 100 base oil for superior thermal stability and cleanliness
- Excellent carbon and varnish control in reciprocating compressors
- Extended 8,000+ hour service life
- Strong anti-wear, rust, and corrosion protection
- Reliable performance in extreme hot and cold conditions
- Compatible with OEMs including Atlas Copco, Ingersoll Rand, Quincy, Kaeser, and Gardner Denver
Recommended Applications: Designed for reciprocating piston air compressors in industrial, automotive, and commercial applications where long drain intervals and clean operation are critical.
Technical Specifications – Tri-Guard™ 2100 Piston Synthetic Diester Compressor Oil
ISO Viscosity Grade (ASTM D2422): 100
Viscosity @ 100°C (ASTM D445): 11.5 cSt
Viscosity @ 40°C (ASTM D445): 96 cSt
Viscosity Index (ASTM D2270): 102
Pour Point (ASTM D97): -43°C (-45°F)
API Gravity (ASTM D4052): 23.4
Flash Point (ASTM D92): 244°C (472°F)
Demulsibility (130°F, 30 Min) (ASTM D1401): 40/40/0
Copper Strip Corrosion (ASTM D130): 1a
Rust Test – Distilled Water (ASTM D665): Pass
Rust Test – Salt Water (ASTM D665): Pass
Foam Sequence I, II, III (ASTM D892): 0/0/0
Total Acid Number (TAN) (ASTM D664): 0.11
Service Life: Up to 8,000+ hours under normal operating conditions (oil life is dependent on operating conditions and maintenance practices — a regular oil analysis program is recommended).
Choose options




Why TriboDyn Tri-Guard 2100 Diester Outperforms Ordinary Compressor Oil

8,000+ Hours Service Life
Typical mineral compressor oils last only 2,000–4,000 hours. Tri-Guard 2100 delivers up to 8,000+ hours of reliable service — dramatically reducing oil changes, labor, disposal costs, and downtime on your reciprocating air compressor.

Synthetic Diester Base – Superior Carbon & Varnish Control
Regular synthetic compressor oils still allow carbon and varnish to build up in reciprocating pistons. Tri-Guard 2100’s advanced synthetic diester base provides outstanding cleaning properties and far superior carbon & varnish control, keeping valves, rings, and cylinders much cleaner than standard synthetics.

Superior Wear, Rust & Corrosion Protection
Humid environments and stop-start operation cause rapid wear, rust, and corrosion. Tri-Guard 2100 passes rigorous ASTM rust tests and delivers superior wear protection, extending compressor life and reducing expensive repairs.

Reduced Energy Consumption
Poor lubrication increases friction and power draw. Tri-Guard 2100’s excellent film strength and thermal stability reduce internal friction, lowering energy consumption and helping your reciprocating air compressor run more efficiently.
Verified Reviews



Buy with confidence
Meets or Exceeds Demanding Industry Specifications
ISO 100 (30W Non-Detergent) • Up to 8,000+ Hours Service Life • Synthetic Diester Base with Outstanding Carbon & Varnish Control • Superior Wear, Rust & Corrosion Protection • Passes ASTM Rust Tests (Distilled & Salt Water) • Compatible with Atlas Copco, Ingersoll Rand, Quincy, Kaeser, Champion, Gardner Denver & many more.
100% Customer Satisfaction
Hundreds of 5-star reviews • Perfect 100% rating on eBay for over 5 years. You are buying the worlds best oil, our shipping speed, packing, and service is 2nd to none.
Made in the USA
Exclusively manufactured in our own ISO 9001 certified facility. Unmatched purity and quality in every drop.
Downloads
Safety Data Sheet (SDS)
Download the official Safety Data Sheet
Frequently Asked Questions
Tri-Guard 2100 is engineered for up to 8,000+ hours of reliable service in piston compressors — significantly longer than conventional mineral oils (often 2,000–4,000 hours) or many standard synthetics. This extended drain interval reduces oil changes, labor, disposal costs, and downtime.
Regular synthetic compressor oils still allow carbon and varnish to build up, causing valve sticking and overheating. Tri-Guard 2100’s advanced synthetic diester base provides outstanding cleaning properties and superior carbon & varnish control, keeping valves, rings, and cylinders much cleaner than standard synthetics.
Yes. Reciprocating compressors often operate in humid or stop-start conditions that lead to rust and corrosion. Tri-Guard 2100 passes rigorous ASTM rust tests (both distilled water and salt water) and delivers superior wear, rust, and corrosion protection.
Yes. Its excellent film strength, foam control, and thermal stability reduce internal friction, lowering energy consumption and helping your reciprocating air compressor run more efficiently compared to standard oils.
It is fully compatible with most synthetic and conventional compressor oils and exceeds warranty requirements for major manufacturers including Atlas Copco, Ingersoll Rand, Quincy, Kaeser, Champion, Gardner Denver, and many others. It is also approved as a break-in oil.
TriboDyn oils are developed by world-renowned Tribologists with decades of experience engineering high-performance lubricants for aerospace, heavy industry, and professional racing applications. This deep technical expertise ensures every formulation, including Tri-Guard 2100, delivers professional-grade performance and reliability you can trust in your reciprocating air compressor.
