*Pump for engine oil is designed for a particular viscosity .If it pumps higher viscosity oil pump will get overloaded and oil may not reach its destination .Read the following and you will come to know that the function of both types of oils is different.
If you use non-recommended oil , it will hamper the performance in a long run which will put your generator in trouble at any time.
Motor oil, or engine oil, is an oil used for lubrication of various internal combustion engines. While the main function is to lubricate moving parts, motor oil also cleans, inhibits corrosion, improves sealing and cools the engine by carrying heat away from the moving parts. The majority of motor oils are derived from petroleum. Motor oil mostly consists of hydrocarbons, organic compounds consisting entirely of carbon and hydrogen.
-Other non-motor oils include gear or transmission, and differentials oils. These are used in manual gearboxes and driven axles. They could include specialty uses including EP (Extreme Pressure), hypoid, and limited slip functions.
Again, they are not to be used for engine lubrication.
Gear oil is a motor oil made specifically for transmissions, transfer cases, and differentials in automobiles, trucks, and other machinery. It is of a higher viscosity to better protect the gears and usually is associated with a strong sulfur smell. The high viscosity ensures transfer of lubricant throughout the gear train. This is necessary since the devices needing this heavy oil do not have pumps for transferring the oil with only a portion of the lowermost gears bathed in an oil sump. This heavy oil can create viscous drag leading to inefficiencies in vehicle operation. Some modern automatic transaxles (integrated transmission and differential) do not use a heavy oil at all but lubricate with the lower viscosity hydraulic fluid, which is available at pressure within the automatic transmission.What will happen If I put Gear Oil instead of engine oil in a generator engine?
You stand a good chance of frying the engine. Gear oil normally runs at an SAE viscosity rating of around 90. Small internal combustion engines would normally take a viscosity around 30 although they may take a multi viscosity oil like a car engine (check your manual). So the much thicker oil may not reach everywhere that needs lubrication (especially the tighter clearances) and you stand the chance of having those parts overheat.
Why do you want to screw up your home generator?
Look in the manual and put the specified engine oil
ask a mechanic
gear oil isn't thick enough to keep the engine lubed
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