See also:

Before starting out on a trip
- Check that the vehicle and vehicle-tohitch mounting are in good condition. If any problems are apparent, do not tow the trailer. - Check that the vehicle sits horizontally with the trailer ...

Engine
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Recommended grade and viscosity
Each oil manufacturer has its own base oils and additives. Never use different brands together. For details, refer to “Manual transmission, front differential and rear differential gear oil”. ...