What kind of motor oil is best?
Synthetic-blend motor oil is the best of both worlds. It is a mixture of synthetic and conventional base oils with additives found in both. It has excellent engine protection properties at a lower cost than full synthetics.
What are the primary functions of motor oil?
The primary functions of motor oil are: Lubricate engine moving parts to reduce friction and prevent wear. Clear engine of contaminants. Seal piston and liner for optimum engine efficiency. Resist high temperature degradation.
What does motor oil actually do inside the engine?
In the crankcase of a vehicle engine, motor oil lubricates rotating or sliding surfaces between the crankshaft journal bearings (main bearings and big-end bearings) and rods connecting the pistons to the crankshaft. The oil collects in an oil pan, or sump, at the bottom of the crankcase.
What is the best motor oil brand?
Wurth Triathlon. The best way to determine which oil, and which viscosity works best for your driving habits, climate and engine, is through used oil analysis, that way you can see how much engine wear is taking place.
What is the recommended oil for a Volkswagen Jetta?
Volkswagen has very strict oil requirements for its cars, particularly the TDI, and only one type of oil is recommended by VW for use in the 2010 Jetta TDI. Volkswagen recommends Castrol Synthetic SLX Professional motor oil.
Does motor oil brand switching hurt car engines?
No. Switching brands is not harmful to your engine as long as you choose an oil marked with the API donut of the same level, e.g., API SN. Motor oil manufacturers must meet minimum industry standards for performance and compatibility of the API mark.
What motor oil to use?
Best Synthetic Motor Oil You Should Be Using Mobil 1 5W-30 Motor Oil Castrol Edge 0W-40 A3/B4 Motor Oil Pennzoil Ultra Platinum 5W-30 Full Synthetic Motor Oil Royal Purple SAE 5W-30 API-Licensed Synthetic Motor Oil MAG1 5W-30 Full Synthetic Motor Oil Liqui Moly Premium 5W-40 Synthetic Motor Oil Quaker State Full Synthetic Motor Oil