Quote:
Originally Posted by bluzman
I assume my 370Z came from the factory with Nissan Ester in it. I've changed the oil twice since then NOT using Nissan Ester (Castrol GTX) and I can hear absolutely no difference in the sound of the engine today (~7,700 miles) versus the day I took delivery (8 miles). Just sayin'
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Ester is mostly likely in the Castrol GTX formulation.