Nissan
Well-Known Member
I wanted to do an oil change myself, but they told me I would lose my warrantyI would seriously consider increasing the viscosity to 5W-30 and would confirm the brand they are using. Bulk oil can contain impurities and many service locations do not maintain bulk oil containers they way they should.
Given that you have had two oil related engine failures, I would either find another service center or start performing my own oil changes--preferably the latter so that you know what is going into the engine.
Do you think 5w-30 oil is more effective?
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