Engine oil VALVOLINE or IDEMITSU

Valvoline is the best oil I can recommend to you. Not even Royal Purple matches it in quality. They have a +75K miles and a +150K miles version of the oil. All of my cars are now on it after trying them all (Mobil, Royal Purple, Pennzoil, Castrol), the only one that effectively prevented oil burn and sealed any leaks in my other cars was Valvoline.

I personally prefer Valvoline, they seem to know what they're doing and have their own engine lab to test and experiment with oils, and that oil they made specifically for hi-milage engines work bloody good at rejuvenating a smoky old engine.

I have to use high zinc oil, Valvoline VR1 is the only oil I can buy that has enough zinc.

Idemitsu all day. It’s synthetic but what needs to be emphasized is the ingredient blend is purpose designed for a rotary to make the right lube + burn.

I've been running that exact oil in my rx8 for about 1k km now and its still as smooth as ever

I switched to Valvoline last oil changed and really like it. Feels more lively than when I changed it in the past (typically use dealer recommended Castro).

I use valvoline extended protection

This might be the best oil product of the century.. Valvoline Restore and Protect for gas motors.

Trying the Valvoline protect and restore and it's been great

I , personally, like Valvoline products. I've opened up engines just to see sludge built up from not changing your oil or using cheap oil and not changing it enough. I have found that engines that used Valvoline oil were much cleaner on the inside. After many miles. Compared to other brands.