RX8Club.com

Notices
Series I Trouble Shooting This is the place to learn more about or discuss any issues you're having with your RX-8

Should 5w-30 be used instead?

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 08-05-2010, 10:07 PM
  #1  
Registered User
Thread Starter
 
jaxen's Avatar
 
Join Date: Jul 2010
Location: MA
Posts: 41
Likes: 0
Received 0 Likes on 0 Posts
Should 5w-30 be used instead?
Is it true that everywhere else other than the US its recommended to use 5w-30? Could the lightness of the 5w-20 be a major cause to engine troubles especially due to high temps? I know it'll void the warranty but my new engine will only be warrantied for 12,000 miles.
jaxen is offline  
Reply Like
Old 08-06-2010, 01:12 AM
  #2  
Registered
iTrader: (4)
 
alnielsen's Avatar
 
Join Date: Aug 2004
Location: Buddhist Monastery, High Himalaya Mtns. of Tibet
Posts: 12,255
Received 6 Likes on 6 Posts
After loosing 3 engines on 5w-20, I am now using 10w-40.
alnielsen is offline  
Reply Like
Old 08-06-2010, 01:21 AM
  #3  
Drummond Built
iTrader: (6)
 
WTBRotary!'s Avatar
 
Join Date: Aug 2008
Location: DFW, Texas
Posts: 3,703
Likes: 0
Received 0 Likes on 0 Posts
Please close this thread and have him search... Lol
WTBRotary! is offline  
Reply Like
Old 08-06-2010, 10:08 AM
  #4  
Administrator
 
zoom44's Avatar
 
Join Date: Jul 2002
Location: portland oregon
Posts: 21,958
Received 115 Likes on 88 Posts
Originally Posted by jaxen
I know it'll void the warranty but my new engine will only be warrantied for 12,000 miles.
how would it void your warranty?
zoom44 is offline  
Reply Like
Old 08-06-2010, 10:27 AM
  #5  
Registered Lunatic
iTrader: (1)
 
Tamas's Avatar
 
Join Date: Aug 2003
Location: SF Bay Area, California
Posts: 3,575
Received 37 Likes on 32 Posts
5w-30 will NOT void the warranty.
Yes, everywhere except for the US that's the recommended oil weight.
Tamas is offline  
Reply Like
Old 08-06-2010, 10:36 AM
  #6  
Registered
 
jasonrxeight's Avatar
 
Join Date: Jan 2010
Location: Omaha, NE
Posts: 3,487
Likes: 0
Received 3 Likes on 3 Posts
should use 70w90, or glue.
jasonrxeight is offline  
Reply Like
Old 08-06-2010, 10:39 AM
  #7  
WENTGERMAN
iTrader: (6)
 
shadycrew31's Avatar
 
Join Date: Apr 2008
Location: Burbs,PA
Posts: 5,805
Received 30 Likes on 22 Posts
Name: searchfirst10pu.gif Views: 12 Size: 14.2 KB
shadycrew31 is offline  
Reply Like
Old 08-06-2010, 11:00 AM
  #8  
Registered
iTrader: (15)
 
paimon.soror's Avatar
 
Join Date: Jun 2010
Location: Between Cones
Posts: 7,560
Received 25 Likes on 23 Posts
Originally Posted by Tamas
5w-30 will NOT void the warranty.
Yes, everywhere except for the US that's the recommended oil weight.
So i hate to add to "another oil thread" but there has been one question that has been on my mind. How exactly can mazda tell what grade oil you are using? Lets say i use 10w-40 and my motor fails, would they really go through my oil, run some analysis, and get a gauge on what grade oil i have? Would they just look at my receipts? Again I'm not trying to scam a warranty claim, I am just trying to figure out if the "risk" is worth it of using a higher grade oil that others have had great luck with.
paimon.soror is offline  
Reply Like
Old 08-06-2010, 11:00 AM
  #9  
Zoom Zoom Addict
 
VashGS's Avatar
 
Join Date: May 2010
Location: Texas Hill County
Posts: 454
Likes: 0
Received 0 Likes on 0 Posts
Im using Valvoline 10-30 on new reman engine right now. Changed it at 2000 and will change it to 10-40 at 3000 (super hot central Tex). 5 is to lame for my area... it has not even snowed here since 1985.
VashGS is offline  
Reply Like
Old 08-06-2010, 11:10 AM
  #10  
Zoom Zoom Addict
 
VashGS's Avatar
 
Join Date: May 2010
Location: Texas Hill County
Posts: 454
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by paimon.soror
So i hate to add to "another oil thread" but there has been one question that has been on my mind. How exactly can mazda tell what grade oil you are using? Lets say i use 10w-40 and my motor fails, would they really go through my oil, run some analysis, and get a gauge on what grade oil i have? Would they just look at my receipts? Again I'm not trying to scam a warranty claim, I am just trying to figure out if the "risk" is worth it of using a higher grade oil that others have had great luck with.
It's just a myth that change of oil viscosity, brand or synthetic voids the warranty. It does not. There is lot of threads on it. If a dealer say it does they lie and need a lawyer to beat them down.

The owner of Royal Purple daily driver is an Rx8... just sayin.
VashGS is offline  
Reply Like
Old 08-06-2010, 09:13 PM
  #11  
Registered User
Thread Starter
 
jaxen's Avatar
 
Join Date: Jul 2010
Location: MA
Posts: 41
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by alnielsen
After loosing 3 engines on 5w-20, I am now using 10w-40.
Hows that workin out for ya? And sorry guys about "another oil thread" thought I was being innovative lol.
jaxen is offline  
Reply Like
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Engine Temps
elf
Series I Tech Garage
53
09-27-2016 08:50 AM
Oil: Product Data Sheets
9krpmrx8
Series I Tech Garage
70
04-20-2010 10:31 AM
5W-20 vs 5W-30
New Yorker
RX-8 Discussion
54
11-09-2006 12:45 PM
Idle Roughness Fixed With 5W-30?
brillo
Series I Tech Garage
16
07-23-2006 07:53 AM
What's the difference between 5W-20 & 5W-30?
Javafuel
Series I Tech Garage
16
11-15-2003 07:13 PM
Tags
Back to Subforum
Series I Trouble Shooting
View Next Unread
Sluggish Acceleration...Warranty?



You have already rated this thread Rating: Thread Rating: 0 votes, average.
Show Printable Version
Email this Page

Advanced Search
Quick Reply: Should 5w-30 be used instead?


Reply Closed Thread Share

All times are GMT -5. The time now is 12:20 PM.