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|  | | | How does it help maximize engine efficiency? | | - Modern automobile gasoline engines have an efficiency of about 15%.
- The remainder of the energy (about 85%) is unused and rejected as heat in the exhaust gases or consumed by the motor in the form of friction.
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| There are 4 key areas in an engine where energy loss occurs:
| 1. The Valve Train
Energy loss occurs in the camshaft bearings and also in the contact area between the valve and lifter.
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| During warm-up, Mobil 1 Advanced Fuel Economy flows faster because of its lower viscosity to minimize metal to metal contact to reduce friction and wear.
Note – many modern engines have roller lifters to reduce friction loss.
| 2. The Piston and Cylinder
Energy is lost at the piston liner interface during the combustion cycle and especially before and after the midstroke.
Mobil 1 Advanced Fuel Economy works to reduce friction at points of contact between the piston compression rings and cylinder walls.
| 3. The Oil Pump
In the oil pump, energy loss occurs due to rotational energy consumed by pumping heavier viscosity oils (10W-30, 10W-40, 20W-50), particularly during warm-up.
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| During the warm up phase, the Mobil 1 fully synthetic formulation because of its lower viscosity flows more easily through the oil pump, requiring less energy to pump the oil to the critical engine parts.
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Four-Stroke Internal Combustion Engine
| | | | 4. The Crankshaft
The main bearings and connecting rod bearings are two areas where friction abounds.
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| | | | Mobil 1 Advanced Fuel Economy’s synthetic base stock composition ensures low traction (internal fluid friction) to further contribute to improved engine efficiency.
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Mobil 1 Advanced Fuel Economy provides faster lubrication and less viscous drag than higher viscosity oils.
Calculate your fuel savings potential by switching to Mobil 1 0W-20 Advanced Fuel Economy or Mobil 1 0W-30 Advanced Fuel Economy.
Have questions? Read our FAQs.
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