I've heard both and can't seem to get a straight answer can you or is it benificial to use synthetic oil or is it harmful to the rotary????????

 

If you use enough question marks, no one will notice that you didn't search.

 

this has been asked once or twice before...
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic
https://www.rx8club.com/showthread.p...ight=synthetic

There are a bunch more, but this should give you everything you've ever wanted to know about this topic

 

The answer is yes.

 

Owners manuals are awesome!!!! But so is searching!

 

I use it, no problem.

stop being a ***** and just use it already.

 

Well I use 5w20 so I guess Im a *****! But thats ok because you are what u eat!!

 

5w20 is ok, 5w30 is ok, even 5w40 is ok

it depends on where you live.

40 might be a bit too much for Renesis.

20 I think its too *whack*

30, best of both worlds. my engine is happy
(but clutch bracket broke, thats another story )

Use whatever you think its good, any name brand should be fine.

oh yeah, I was at BJs last saturday, and they have a really good deal on Shell Full Synthetic Oil, 15 bux after rebate. original 21. I got some a month something ago when they were doing 17 bux after rebate (Damn it) got myself 2 cases of 5w30. I might try it after Im done with my RP (still got like 6 quart bottle)

for 15 bux a case (6 quart) like 2 bux something for a quart of full synthetic. not bad

 

10w30

 

yea, i dont know, 5w30 and especially synthetic scares me, I keep hearing how bad it is for the car yet you guys use it without any problem! haha, so I just continue to use what I use