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Royal Purple


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Posted

Look at the certifications on the bottle. It literally does not adhere to anything but API standards.

Posted

The longest I've gone without changing my oil on the regal was 4500 miles with fully synthetic, and after an oil change, I noticed the car would have a periodic rough idle while stopped, which I could feel in the brake pedal and steering wheel. Whether or not that's attributed to the oil change is beyond me.

 

I've experienced something very similar!

 

So how'd you fix it? One oil change later and its still happening...

 

Maybe I should dump a canister of seafoam in the crank case before I change my oil...

 

 

I just change my oil :lol: and it goes away. I made sure I wasn't low on oil, and let it be.

Posted

The longest I've gone without changing my oil on the regal was 4500 miles with fully synthetic, and after an oil change, I noticed the car would have a periodic rough idle while stopped, which I could feel in the brake pedal and steering wheel. Whether or not that's attributed to the oil change is beyond me.

 

I've experienced something very similar!

 

So how'd you fix it? One oil change later and its still happening...

 

Maybe I should dump a canister of seafoam in the crank case before I change my oil...

 

 

I just change my oil :lol: and it goes away. I made sure I wasn't low on oil, and let it be.

 

Hmm, then I'm hoping this will go away by the time I do my next oil change, which is coming up pretty soon.

Posted

RP website says dont use it in a brand new engine. Wait until 2000 -3000 mile mark.

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