XL-7 2WD V6-3.6L (2007)
In the event that a vehicle comes into the dealership with a customer complaining of a abnormal engine noise or evidence of internal engine damage,
especially following the recent replacement of the engine oil filter, please refer to the following examples of incidents that have been encountered as a
result of using poor quality oil filters:
Improper installation or using an incorrect part, can result in damage to the sealing elements of the oil filter. Pictured here is a portion of a silicon seal
(1), alongside a complete seal (2) from an oil filter.
Debris from poor quality oil filters has been found in various locations in the engine, restricting and in some cases totally blocking oil flow to critical
areas of the engine.
Here you can see the piece of seal found in the oil supply passage feeding the piston skirt(s)
In this illustration the debris was found in the engine block webbing (1), obstructing the oil flow to the main and rod bearings (2).
In the top end of the engine, ticking noise(s) from the valve train can also be attributed to failures within some aftermarket filters.
