Engine oil VALVOLINE or Total

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

20w 50 Valvoline VR1 is all I use. It’s expensive but because the gearbox and engine use the same oil you need a high zinc oil and VR1 is the best out there in my opinion.

I run valvoline motorcycle 20w50 in the primary and crankcase and valvoline 75w140 diff in the trans.

I use Valvoline 20W 50 VR1 racing oil. It’s got a high magnesium content so well suited for the gearbox.

If you want brand recommendation choose Valvoline Extended Protection 5w-20 every 4k miles.

Cummins uses Valvoline premium blue.