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Confused about oil spec

0W20 will be just about okay for the winter but I would recommend changing this to a 0W30 for the summer months.

Also don't be too fooled by a used oils colour - black is GOOD as it means all the rubbish from your engine is being held in suspension in the oil and will drop out when you change it. If the oil is still clear then all the rubbish is actually plastered around your engine!

If the new oil then goes black very quickly then it indicates the previous oil was well past it's change interval and was 'full' of rubbish and the new oil has immediately started collecting all the remaining rubbish from around the engine. If this occurs then possible think about a slightly earlier change interval next time.
 
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