My 97 cobra has 132k on original engine, I have been using royal purple for a while now and has always been good to me. But I've been hearing that the brand is just a waste of money bla bla bla. But I've never heard anything from cobra owners.
What do you guys think about it and which oil brand do you recommend? (Full synthetic)
Thanks guys, I change the oil every 2k miles but only because she sees 2k miles every 8 months. I've even had a mechanic give me slack about Rp and told me to switch back to conventional. Safe to say i never called him back.
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