Engine oil myths that could cost you money.

Some of these engine oil myths have been around so long that they’ve become urban legends.

How many times have you heard someone slating an oil as “inferior” because it discolours? Well although the theory is sound in certain cases, this is an engine oil myth.

A little knowledge isn't necessarily a dangerous thing, but a little knowledge that doesn't happen to be true could quite possibly ruin your engine, or at least cost you a lot of unnecessary expense.

Here are the 10 engine oil myths that have become urban legends.

Engine oil myth No1: Oil must be changed every 5,000km’s

Many years ago, most auto manufacturer recommended motor oil in be changed every