Thread: WHAT GRADE OIL DO YOU USE
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Old Dec 17, 2004 | 01:14 PM
  #26  
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Rallyesport
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So all Castrol fully synthetic oils are based on a group 3 base (which is alot cheeper than group 4/5)? What kind of base does Mobil1 5w-50 and 15w-50 use?
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