14-09-15, 09:51 PM
(12-09-15, 09:28 PM)nickodemon link Wrote: I have used castrol and halfords and both seem to end up thinning and becoming discoloured quickly.I might be wrong but I was always told that an oil that blackened up was doing its job by collecting the dirt in the engine. If an oil stays the same colour then it's not picking up the dirt.