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post #4 of (permalink) Old 5th February 2006
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Oil quality has improved almost beyond comprehension in the last few years and I think it has left a few people behind in it's wake.The quality of oil that you use does have a direct effect on the life of your engine but to say that you have never had a head off of any of your cars because of the oil you use is misleading to say the least.
Speaking from the point of view of someone is who is still in touch with modern motor vehicle engineering(independant garage),whenever we do an oil and filter change we always consult the relevant publication on which oil to refill the system with,but manufacturers tend to change their opinions on a regular basis and 'forget' to inform anybody that the oil that once was recommended now shouldn't be used.To say that garages need the revenue from supplying inferior quality oil at high prices is completely insulting to the vast majority of people who work in the motor repair industry(I'll admit that it only takes a few rouges to taint the whole industry but even so....).If we charged our average customer vast amounts of money to do an oil and filter change because we filled their engine with 'quality' engine oil then we would soon go out of business.If a customer is that worried about oil then they will provide their own oil which is absolutely fine.
Service intervals are stretched out not only because the quality of engineering and of oils has improved but because the customer has demanded it and mileages of modern cars have increased considerably.
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2004 Saab 9-5 HOT Aero and a 2001 Audi A3 1.8 Turbo
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