Engine oil VALVOLINE or AMSOIL

10w-40 AMSOIL for metric bikes. Bike runs and shifts like new with 30k on the clock

The Hyundai owner manual also recommended Quaker State oil too  , to me all full Synthetic oil is the same , Quaker State oil have been around for a long time now its ok to use , do you know the brand Super Tech oil in Walmart those are new brand of oil but a lot of people loving its as long its full Synthetic , I have tried all others full Synthetic high mileage oil and end up with Valvoline & Mobile1 ,  I buy them whichever on sale

I highly recommend Valvoline high mileage full synthetic 5W-30 oil, with Mobil 1 oil filter, my Si K20z3 seems to run so much smoother for longer with this type of oil.

2017 Yukon Denali. Threw lifters at 134. Replaced all. Bad chirp until 142k when switched to Valvoline rp from m1hm. Still a slight chirp but that was gone after adding can of mos2.

Yo uso Valvoline 15w40 semisintético y no he tenido problemas, es una de las marcas que recomienda el manual de mi carro.

We've been running the valvoline restore and protect oil lately in our fleet of cars and have nothing but positive things to say. Slowed down some oil burning on our high mileage scion TC and no complaints from our other vehicles, including my turbocharged 200k mile 09 focus.

I was a diehard Mobil 1 Extended Protection guy, but fell into the hype about Valvoline Restore & Protect. Tried it on my 2015 Mazda6 2.5 with 95k miles and have to say I'm impressed. I bought it used, it was using about a quart every 3k maybe, and had some blowby. Otherwise ran good, had several 40+ mpg tanks. 

Switched to R&P, after 1k the blowby went away and after 3k it looks like it stopped burning oil.

After almost 2 weeks of usage, grabe as in grabeeee. napakasmooooth! hahaha tuwang tuwa ako kada throttle kasi mararamdaman mo talaga yung pagkatahimik+ smoothness + responsive throttle nya kaya ang laki ng tinipid sa gas. Kumbaga yung hinahanap ko na smoothnes ng takbo is dito ko nafeel when I start using this kind of oil. From 39 km/l naging 41.3 km/l na sya.

Now, my wife's '16 FORESTER XT, 2.0 turbo, has 130,000 miles, Amsoil changes every 10,000 miles, and still burns NO oil.

I did have a 1982 diesel Jetta go 435,000 miles on oem int. shaft bearings. I had access to a lot of free Amsoil back then....so, that may have helped. However, I think it over-lubed the cylinder walls though. Rings weren't exactly what you would call 'tight.'