The complete
On Guard lineup

Veteran Owned · American Made

Onguard 0W-20 Full Synthetic Motor Oil with OXI-PLUS combines advanced performance additives with synthetic base stocks for outstanding protection in modern gasoline and flex-fueled passenger cars and light trucks.

• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard 5W-20 Full Synthetic delivers improved engine thermal stability and fuel economy with SP GF-6 service classification — engineered for sludge control and emission system protection.



• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard 5W-30 Full Synthetic combines advanced performance additives with synthetic base stocks. Provides outstanding protection across all operating conditions for gasoline and flex-fueled engines.



• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard 10W-40 Full Synthetic provides outstanding protection for gasoline and flex-fueled passenger cars and light trucks with improved fuel economy, sludge control and emission system protection.



• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard 5W-20 Premium Synthetic Blend with OXI-PLUS delivers improved engine thermal stability, fuel economy and sludge control for modern gasoline and flex-fueled engines.



• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard 5W-30 Premium Synthetic Blend Motor Oil with OXI-PLUS combines advanced performance additives with synthetic base stocks for outstanding engine protection.



• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard 10W-30 Premium Synthetic Blend delivers improved thermal stability, fuel economy and emission system protection for passenger cars and light trucks.



• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard 15W-40 Premium Diesel Engine Oil represents the current state of the art — blending OXI-PLUS additives with ultra-high-quality hydro-treated paraffinic base stocks for excellent performance.



• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard 15W-40 Full Synthetic Motor Oil with OXI-PLUS delivers acid control, deposit control and exceptional wear protection — for enhanced engine performance and extended drain intervals.



• Improved oxidation protection and extended oil life
• Enhanced protection for turbocharged and hard-working engines
• Combats condensation damage from stop-and-go driving
• Higher TBN to neutralize harmful combustion acids
• Excellent resistance to thermal breakdown at high temperatures

Onguard's SAE 60 Nitro Racing Oil is a premium grade product designed for critical protection of high performance racing engines. Reduces friction, increases power and resists fuel contamination under the most extreme racing conditions.



• Full synthetic — extreme duty formula
• 2000 PPM ZDDP for maximum anti-wear protection
• Calcium-based additives promote load capacity and cleanliness
• Anti-foaming chemistry for sustained high-RPM performance

A premium full synthetic designed for high performance and racing engines. Reduces friction and increases engine power with high-zinc ZDDP chemistry plus calcium-based detergent for engine cleanliness.

• High ZDDP for maximum flat-tappet and racing protection
• Full synthetic base stocks for extreme operating conditions
• WARNING: Not for vehicles equipped with a catalytic converter



Designed to deliver high performance under everyday and extreme conditions. Low Zinc chemistry allows use in vehicles equipped with catalytic converters. Recommended for cars, trucks, motorcycles, street rods, Harley-Davidson and S&S engines.



• JASO MA rated for motorcycle wet-clutch compatibility
• Low Zinc — safe for catalytic converters
• Recommended for Harley-Davidson, S&S and similar engines

A truly universal antifreeze/coolant for top-off or complete system flush. Premium ethylene glycol-based product providing state-of-the-art heavy-duty protection — compatible with all green and red antifreeze products.



• Freeze-up and boil-over protection
• Prevents scale, sludge and clogging
• Wet sleeve liner pitting protection
• Phosphate free, low silicate
• Blended with pure de-ionized water — no SCAs required
• Best choice for Japanese and Korean vehicles

Formulated from select highly refined base oils with a specially balanced additive combination. Outstanding high-temperature oxidation resistance, dispersion and detergency — with friction modifiers for smooth lockups. Recommended for most automatic transmissions before 2005.

Synthetic base stocks plus state-of-the-art additive technology create a high-quality multifunctional fluid. Improved thermal stability and low-temperature properties — extensively field tested across a variety of transmission types and brands.



A high-quality product designed for engine assembly — providing substantial lubrication of piston skirts, internal bearings, cams, lifters, valve train, and internal engine components. Contains zinc, moly, and special additives for maximum startup and break-in protection.

• Eliminates dry starts on freshly assembled engines
• Prevents seizing, galling, and piston scuffing
• Zinc and moly chemistry for flat-tappet protection