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Car: 2001 Chrysler
Engine: 3.5 HO V6 125k miles
Octane: 87 Manu Suggested running 89 or 92 depending on cash on hand
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I noticed recently that my engine makes a ticking type sound occasionally when I maintain higher RPM. It sounds like metal clinking almost, I normally can only hear it when Im on a bridge or when the cars surrounded by walls and I hear it resonate off. Also I can occasionally hear it if Im in too low of a gear and try to accelerate.
Someone suggested that I should try thicker oil or Lucas. Engines got 125k and im still using 5-30 like manufacturer suggests.
IS this the best first step, and what should I do next?