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Let me put it to you this way, a Honda S2000 generates 120HP per liter in a 2.0L package from the factory (120HP x 2 = 240HP). A 5.0L Mustang does not come close to producing 120HP x 5 = 600HP from the factory. Does that mean that we all shouldn't buy 5.0L Mustangs because it's not producing...

The teardown appearance of engines don't lie. How the piston/cylinder walls look using a quality synthetic at 50k miles looks a lot better than one that was using dino oil for 50k miles. I can't say that all engines will look like this but after seeing over 100 engines a year for 35 years, I'm...

I don't have a motorcycle, I own a moped and I've used only 1 of their products, Castor 927. It's a great oil that I've used at 32:1 and the tear down looks immaculate. Mopeds don't have powervalves so I don't have to worry about buildup other than at the pipe (it is a little harder on the...

I own a slightly modified moped (scooter in the USA) with a 72cc bore, stock crank ratio with a high performance pipe, 28mm carb, intake, pulley, weights, etc. Keep in mind that my bike has no power valves. I've been on the lookout for some oils that perform well and look good after a teardown...