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This is my most recent UOA. This is my 3nd oil report on Amsoil signature series. The change interval is about 9 months. The Blackstone lab suggest me to shorten it down to 8500 miles or a year. My previous oil reports: 1st oil report...

This is my most recent UOA. This is my 2nd oil report on Amsoil signature series. The change interval is about a full year. The Blackstone lab suggest me to shorten it down to 5000 miles or 9 months. My previous oil reports: 1st oil report...

This is my most recent UOA. Previous oil was Royal Purple which showed excessive wear. So far I am happy with the Amsoil Signature Series 10W30.

I took this test back in May since my engine was running poorly with Royal Purple. I have been using RP for 4 oil changes with approximately 14k miles on it. I switched to amsoil signature series after this.

Hey everyone! I have been lurking around the forum for a while and finally decide to join today! My car is a v6 dodge charger and I want to hear some suggestions on which oil brands to use. So some info of my situation. Vehicle: 2008 Dodge Charger SXT, 3.5L V6 engine. Car has 24.5k miles now...