Under our maintenance programs, we specifically use and recommend the use of Motul’s 100% Synthetic Fuel Economy engine oils specially formulated for recent gasoline engines, naturally aspirated or turbocharged.
 
Whether indirect or direct injection, Motul designed and use of engine oils with low friction and low HTHS (High Temperature High Shear) viscosity (≥ 2.3 mPa.s)
Suitable for all modern gasoline engines requiring a viscosity grade 16 and fuel economy lubricant (API SP-RC, API SP and/or ILSAC GF-6b standards)
 
 
The grade of oil you should use depends on engine clearances, operating conditions, and the climate. Where do you live? If you live in a cold environment, use something like an SAE 0W-16, 0W-20, 5W-20, or 5W-30. These are examples of lower oil viscosity.

What if you live in a place like Phoenix, Arizona? In a warm climate, you want an oil that offers more high-temperature protection. In that case, an SAE 10W-30, 10W-40, 15W-50, or 20W-50 would be more suitable. These four are examples of higher oil viscosity.

Because of government fuel economy requirements, newer cars call for lower-viscosity oil. Also, they now build car and truck engines with tighter clearances. These newer engines don’t need a higher oil viscosity like an SAE 10W-40 or 20W-50.

If you have an engine with a tighter clearance and use an oil with a higher viscosity range, the oil will cause frictional drag. That’s why it’s essential to follow the OEM recommendations.