Valvoline is really good and proves it on tests. Available at any auto parts store... currently running it in a westinghouse 2550dfc
I run Valvoline VR1 20W-50. I believe during cooler seasons you can run a thinner (less viscous) oil.
I use Valvoline R&P 0w-20 and my engine sounds healthy. so does my mom’s Velar. I think whats more important is using the correct viscosity and changing it on time.
Valvoline restore and protect oil or shell rotella t6 oil....
The t6 diesel oil has all the detergents you need to maybe clean out the rings. (And meet the more stringent european standards).
5-30 Valvoline restore & protect is working wonders on my 2.5. Visibly cleaning out deposits and engine running stronger
I switched to valvoline restore and protect on my 06 is250 and it’s working great. The valves are a lot quieter compared to the previous oil I was using which was Kirkland synthetic.
Quaker State oil is recommended in the Hyundai manual but you can absolutely use other brand too , i have used Mobil 1 / Vavoline / Castrol and Pezoil the end i picked Valvoline high mileage Synthetic oil the best of all all other brand the oil burn brown quickly
I used vavoline for my second oil change and so far so good
Oil being dark is a good indicator that you have to do an oil change. However, you shouldn't wait until it changes color to do it. Clear oil doesn't necessarily mean you can keep going.
i use valvoline 5w40 ...so those results arent so good?
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