What is insufficient lubrication?
If there is insufficient lubrication within the turbocharger the consequences can be severe. This is one of the most common reasons for failure, a lack of oil in any lubricated areas can cause premature failure.
Insufficient lubrication can result in catastrophic damage to the bearing systems which can occur within seconds of the turbocharger commencing operation.
Causes of insufficient lubrication
- Poor oil filter maintenance
- Insufficient oil in the sump
- Incorrect oil inlet gasket leading to restriction in oil supply
- Build-up (coking)/carbon deposits in the oil feed pipe
- Applying silicone to the oil inlet gasket causing blockages
- Sludge or coke build up in bearing housing from hot shutdowns
- A damaged, blocked or low-quality oil filter
- Failure to prime the turbo with oil before initial run
- Engine left to idle for long periods, especially during cold weather
- Oil feed pipes containing bends or kinks
- Incorrect grade of oil is used
Preventing turbo failure caused by insufficient lubrication
- Oil supply to the turbo is critical, always check oil pressures are correct
- Always remember to prime the replacement turbocharger with oil before fitting
- Avoid using silicone on oil gaskets as they can easily become detached and block oil passages
- Clean or replace oil inlet pipes to remove carbon deposits or sludge that could restrict oil flow to the bearing systems
- Use fresh and new oil filters (which have been recommended by the engine manufacturer) when fitting a replacement turbocharger
- Allow time for the engine to warm up at the start of each journey and to cool down at the end
