Subaru built the only twin turbo flat four in a production car. Here is how this rare EJ20 setup worked, why it struggled, ...
Turbochargers are known for making your car faster and more fuel efficient in exchange for a constant supply of clean oil to lubricate its parts — this is how it's always been. Or has it? Oil-less ...
Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Audi’s A5 sedan and Q5 SUV families—including the zippier S5 ...
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