Quaker States invitation to the Castrol, Valvoline and Mobil 1 brands to participate in a motor oil challenge to decide whose synthetic motor oil has better wear protection found no takers, as ExxonMobil and BP Lubricants did not reply and Valvoline questioned the adequacy of one-time testing.
In a full-page ad in USA Today March 20, Quaker State invited Castrol, Valvoline and Mobil 1 to the challenge, a one-time Sequence IVA engine test to determine which brands synthetic motor oil provides better wear protection. The deadline to reply was Friday, March 27. For details on the challenge, see last weeks Lube Report article.
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