Hi everyone, I am coming for reporting the situation! I chose Pennzoil Platinum oil and oil fiter. The oil color is originially light yellow but after 100 miles, the oil changes to yellown brown. Is it normal? Is it an indicator of cleaning the dirty stuff in the engine?
Also , after two round trips, I notice that the engine is starting to become quieter and lower rpms when climbing hills (same route, same weather.) Any explanation on this? Is the oil used by the dealer really that bad and may hurt my engine?
Thanks for everyone's help and without you guys I couldnt change the oil myself! Thank you!