Hardware Matching

Long term machine filters (such as MAN HU816/MAHLE OX356D) must be used

Turbocharged models require confirmation of intercooler efficiency (intake temperature ≤ 50 ℃)

Oil monitoring (check every 5000km)

Portable viscometer reading (100 ℃ kinematic viscosity change ≤± 10%)

Filter paper diffusion ring test (deposition ring width ≥ 2mm is considered healthy)

engine status

Old cars with mileage>150000 kilometers need to clean the oil passage first (to avoid old sludge blockage)

If there is oil burning (>0.5L/1000km), the cycle must be shortened