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Q: Opinion on aftermarket oil catch cans

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What is your opinion on aftermarket oil catch cans?

A: It's a great idea if you've got a G...

It's a great idea if you've got a GDI, gasoline direct injection, because it's going to keep any oil from getting into the engine and getting clogged up with carbon. If you've got an older car that's worn and uses some oil, it's a very good idea. Just make sure you get one that's made for your car.

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