My car is having a 140k service next month. I've decided to change from the normal 5W30 Castrol gtx magnetec that I've always used and go for a more advanced oil.
The two oils I can't decide on are...
1) Castrol EDGE sport 0w40
2) Mobil 1 New life 0w40.
Both are top grade oils.....just can't decide which is the best?
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