.32
10w - 30
SAE 30 weight in the summer or SAE 10w30 if you use it in cool temperatures. I highly recommend synthetic oil in any air cooled engine.
Use 30w synthetic or 10w30 synthetic. 30w is preferred.
Need much more info than just cc's to come close to answering that one.
I'm looking to purchase a new lawnmower. It says it's 158cc. About how much horsepower is this?
Best guess is about 200cc. Little bit more or less depending on engine design. Displacement does not directly translate into HP. Bad best geuss...5.0 =158cc and 190cc is a 6.75hp
The formula that works best only applies to the small newer normally aspirated (carbureted) 4 cycle engines. The ratios change slightly worse with altitude and slightly better with fuel injection and tuning. Most American mowers and the newer 4 cycle outboard motors fit into one of these two formulas: Typical new carbureted engine well tuned: 1 x HP per each 25 cc Fuel injected: 1 x HP per each 22 cc Notes:-Most engines are tuned down to a lower HP for better engine life. -It is common for the same cc engine to be built in 3 different HP versions with the highest rated being the maximized HP per cc version. That is how you see price and HP changes on the same cc engine made by the same company. -Some of the newest (2008 and newer) engines from Japan perform slightly better. A typical 150cc motor should equate tobetween 3.5 - 6 HP+ depending on tuning with 5 HP being the adv. The actual formula plots as a curve and is not linear and also does not apply to Max/High Performance engines like in motorcycles.