Regularly monitor the engine oil levels using the dipstick. Low oil levels can cause engine damage. If needed, top up or change the oil following the manufacturer's recommendations.
While in the process of choosing and engine, I tried to pick one that looked good, but also learned about its history. I ended up looking specifically for 6 cylinders inline from BMW mainly because of the form factor (long enough and perfectly flat) but also because I like the brand, and because it’s an engine which performances were acclaimed all these years. The current generation (M54) is used in most powerful BMWs, and its sport version (S52/S54) powers the legendary M series. I ended getting really lucky on Craigslist, and found a pair of identical M52: it was produced at the end of the 90s, which is when BMW moved from cast iron blocks to aluminum, the latter being much lighter which is important, because an engine is heavy. Depending on how many parts are still in it (camshaft, pistons) it can be several hundred pounds. You will need a friend or two to help you carry it, and presumably a very sturdy dolly.
 
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A5: Rough idling can be caused by various factors, including dirty or faulty spark plugs, clogged fuel injectors, vacuum leaks, problems with the idle control valve, uneven compression in the cylinders, and faulty ignition coils or wiring. Have a qualified mechanic inspect your engine to identify the specific cause and perform necessary repairs or replacements.
Engine design often involves working within certain constraints, such as budget limitations, space restrictions, and regulatory requirements. It is crucial to consider these constraints during the conceptual design phase. Trade-offs may be necessary to optimize the design within the given limitations. For example, increasing power output may result in reduced fuel efficiency, and vice versa. Balancing these trade-offs is essential to achieve the desired performance and efficiency goals.
Vehicles require combustion, high heat, flammable liquids (such as gasoline), and friction to function. These elements create many different scenarios in which cars can catch fire, including: fuel system leaks, electrical system failures, spilled fluids, overheating engines and/or catalytic converters, battery issues and car crashes.
As you can see above, the RX-8 doesn’t stack up favourably in terms of fuel economy. The Corvette, with a significantly larger engine, 47 per cent more power, and five per cent more weight still manages 11 per cent better fuel economy. It’s also worth mentioning that this was the first model year for the RX-8, while the Corvette and GTI engines had been around from previous years. Quite simply, there’s nothing good to say about the RX-8 in terms of fuel economy. Although the buyer may not necessarily view this as a negative point, without passing emissions there is no car to buy.
A good engine flush can help loosen deposits and dissolve sludge, helping return your engine to like-new condition.