MAHLE: CHANGING THE FILTER MEANS CHANGING THE SEALS
Patience is a virtue when changing the oil filter
So, it is time to change the oil filter. As easy as it may seem, there are a few things you need to keep in mind. MAHLE suggests you follow its two tips below to be sure to avoid any post-oil change whining.
Tip number one
Always remove the old ring from the flange and don’t forget to coat the new sealing rings with clean motor oil every time before fitting them.
The drain only opens when the filter is loosened during an oil change: the remaining engine oil then flows into the oil pan and can be disposed of. But keep your eyes peeled: the old sealing ring can stick to the flange, and because the used oil is black, the ring can be hard to see.
As a result, leaks can occur and the oil pressure indicator can light up when the engine is running, even though the new filter is properly screwed on.
Tip number two
Never use a removal tool to tighten the filter. This tool should only be used to remove the filter. Overtightening can damage the surface and cause the filter to leak.
Take it slow. When you remove the used filter, the remaining oil in the filter and flange flows back into the oil pan through the antidrain back plate.
This takes time. If you rush this step in the process, you’ll get ahead of the residual oil, so to speak. This can cause used oil to spill over the flange, resulting in contamination.
MAHLE oil filters
MAHLE says its oil filters reliably prevent contaminants from entering the lubrication system and maintain oil quality as well as the performance and efficiency of the engine. Thanks to stable pleat geometry, it says cold start stability is assured.
Load peaks up to 20 bar are compensated due to the high pressure resistance of the housing and a pressure relief valve guarantees the oil supply under all conditions.
A non-return flow valve prevents the draining of the filter when the engine is switched off and ensures adequate oil supply when the engine is started.
Further, MAHLE says high-grade sealing materials and custom-fit connecting pieces assure reliable separation of contaminated and filtered oil.