Lubrication of under-hood applications in vehicles

Krytox™, Lubricants for the automotive market

In this article we explore the best lubricants for under-hood applications.

under-hood applications such as actuators, bearings, gears and transmissions use lubricants that are irreplaceable. This is due to the lack of relubrication facilities, which means that the lubricants used must function as intended during the vehicle’s life cycle. Therefore, vehicle manufacturers must ensure that, when lubricating under the bonnet, the quality of the lubricants used in their vehicles is of the highest quality.

Applications Under-Hood.

Automotive applications under-Hood range from :

• EGR valves
• Clutch release bearings
• Motor-driven actuators
• Alternator bearings
• Belt pulleys
• ABS bearings
• Throttle bodies
• Drivetrain components

Advantages of Krytox™ lubricants

Krytox™ lubricants are designed for automotive applications to ensure superior long-term performance. In general, Krytox™ lubricants, when used for under-the-hood applications, provide :

• noise reduction
• Improved durability of components
• Improvement of the efficiency of mechanical parts
• Reduction of the risk of default and therefore of warranty claims
• Save time and money

Krytox™ lubricants have unique properties that make them ideal for the lubrication of under-the-hood applications such as :

• Operate as intended from -50°C to over 200°C.
• Excellent resistance to chemicals, vapours and combustion residues – which are common in engines and are detrimental to most other lubricants.
• Compatible with all automotive fluids, elastomers and plastics.
• Durable throughout the life of the vehicle.
• Insoluble – retains its lubricity despite the presence of dirt and gravel.
• Low volatility.

By providing excellent lubricity at extremely low and high temperatures, Krytox™ lubricants have the ability to be used in petrol, diesel and electric vehicles. By allowing lubrication even in electric vehicles, Krytox™ enables further innovations in the EV industry.

Lubricants for under-the-hood applications

Accessories for engines

Offering stability, durability and resistance to exposure to fuel and fumes, Krytox™ lubricants are ideal for use in engines.

Bearing / Bushing

Part / Area	Advantages of Krytox™ Lubricants
Alternator Bearing	Compatible with operating speeds in excess of 12,000 rpm* Does not fail due to high shear rates and high bearing loads High temperature under-hood
Belt Tensioner Bushing	Thermally stable Highly resistant to violent impact, dirt, dust and automotive fluids Compatibility with metallic materials, polymers and elastomers
Pulley Bearing	Réduire le bruit à basse température Prévenir la corrosion Prolonger la durée de vie des roulements sur une large plage de vitesses et de niveaux de vibration
Overrunning Clutch	Highly resistant to vibration Extend bearing life over a wide range of speeds and vibration levels Prevention of belt slip
Water Pump Bearing	Stable over a wide range of temperatures Excellent protection against wear and corrosion Resistance to hot water and engine coolant concentrate
Viscous Fan Clutch Bearing	High film-forming capacity separating the lubrication surfaces Totally inert to viscous fan clutch fluids The operating temperature should be close to 200 °C and remain stable.

Transmission and Clutch

Krytox™ lubricants ensure reliable, long-term performance in transmission and clutch applications, even under high speeds.

Part	Advantages of Krytox™ Lubricants
Clutch release bearing	Highly compatible with automotive fluids Reliable performance over long periods Excellent wear resistance under high acceleration
Clutch actuator	Compatible with seals and polymers Inert to all types of hydraulic fluids No swelling or shrinkage

CV Joints / Motorsport

Krytox™ lubricants are ideal for Motorsport and other high performance vehicles as they are capable of withstanding high loads, temperatures and friction.

More information :

Need information about steam turbine lubricants, or about lubricants Krytox™ ? Contact our technical department on +33 426 680 680 or fill in our contact form.

Download the selection guide Krytox™ dedicated to automotive applications :