If you use a higher weight oil than recommended by the manufacture you may cause premature engine wear caused by oil starvation at startup. Use exactly what the manufacture of your vehicle recommends and nothing else.
Using a higher octane than is recommended by Chevrolet, is not only a waste of money, but may actually harm your engine. No additional Power or MPG will result from using a higher octane fuel. That is a myth. Conversely using a lower octane will also harm you engine. So use Exactly what is listed in the owners manual.
If the manufacture recommends 5w20 then by all means use nothing else. Will it do any harm? Yes, over time you will have excess wear. And besides, why would you want to substitute the correct weight oil with another weight? That would be foolish.
No it won.t harm the engine the octane won't as great
Use exactly what your owner's manual lists. Using a higher octane than your engine was designed to burn, will provide no benefit whatsoever. No more power, no better mileage, and in fact can provide poor starting, and in some cases, harm the engine. Besides the fact you are paying more for high octane fuel you do not need. Using a lower than required octane can cause less power and pinging. This can eventually do damage to your engine. It is a myth that a higher octane fuel provides any benefit to an engine not designed to use the higher octane.
Governors limit the RPM on the engine. Removing it will allow higher revs but can cause harm to your engine.
It will not harm the engine but the engine will no longer run properly and will pollute. It is illegal to remove the converter from any vehicle.
No, as long as it is the proper weight. In fact I highly recommend synthetic oil be used in any air cooled engine.
Higher sulphur diesel will not harm the engine but it will to the enviroment. Actually CDI engine runs fine with Euro 2M diesel, however the exhaust filter must be cleaned or replaced after some period of time.
No - in fact, your engine might just appreciate it!
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No, it will not harm the engine. P1457 will not harm the engine nor will it make the engine run bad. It just means the EVAP canister & the related system of hoses & valves is not airtight as it should be. You have a leak somewhere.
It affects weight and harms the liver