Pros:
* Availability: SAE 30 is readily available and generally inexpensive.
* Basic Lubrication: It will provide basic lubrication for your mower engine.
Cons:
* Not designed for lawnmowers: Lawnmovers often run hotter and at higher RPMs than cars, requiring oils specifically formulated for these conditions.
* Viscosity: SAE 30 can be too thick for modern lawnmower engines, especially in cooler temperatures. This can lead to:
* Hard starting: Thick oil makes it harder for the engine to turn over, especially when cold.
* Reduced fuel efficiency: Thick oil increases friction and reduces engine performance.
* Increased wear: Lack of proper lubrication can lead to premature wear on engine components.
* Additives: Car oils often contain additives not suited for lawnmower engines, such as detergents that can cause deposits to build up in the engine.
Better Alternatives:
* SAE 30 lawnmower oil: This is specifically designed for lawnmower engines and offers the best protection.
* SAE 10W-30 or 5W-30: These multi-viscosity oils are suitable for a wider range of temperatures and can provide good protection in most lawnmower engines.
Always consult your lawnmower's owner's manual for the recommended oil type and viscosity. Using the wrong oil can damage your engine.
