Can you use synthetic oil in old cars? Can synthetic oil cause leaks? Sponsored by Mobil 1 motor oil – You can find Mobil 1 ...

Another good thing about synthetic ... and in older cars, this thinner oil can slip past worn-out seals and gaskets. You might also hear weird noises from your engine, like knocking or ticking ...

The best synthetic oils offer more mileage, keep the engine cleaner ... there’s one thing to get out of the way. Whatever oil viscosity your car runs, stick with it. If your owner’s manual ...

For instance, there's a huge variety of motor oil ... oil for older vehicles and high-mileage engines (though synthetic oil is still perfectly safe to use in classic cars). In fact, many oil ...