Welcome to the North American Subaru Impreza Owners Club Tuesday July 26, 2016
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Service & Maintenance

Notices

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 12-03-2005, 01:48 AM   #1
MattSTi
Scooby Specialist
 
Member#: 54885
Join Date: Feb 2004
Chapter/Region: MAIC
Location: NYC/WV
Vehicle:
2004 PSM STi
2006 Mazda MX-5 Race Car

Default Which weight oil recommended for road course duty?

I'm debating which weight redline I should use for this coming spring/summer hpde season.

Last year I ran the stock recommended 5w30, changed after each HPDE (saw 245-250* in very hot weather).

I will have an oil cooler installed for the upcoming season, so my question is, what weight should I go with for track days?

5w30?
10w30?
10w40?

I live in an area that sees pretty hot and humid summer weather (one day at summit ambient temp was like 107*) consistently in the 90's.

Any input is appreciated as always.

-Matt
* Registered users of the site do not see these ads.
MattSTi is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 12-03-2005, 02:02 AM   #2
volkl23
Scooby Specialist
 
Member#: 39092
Join Date: Jun 2003
Chapter/Region: MWSOC
Location: St. Louis MO
Vehicle:
2004 WRX STi
Java Black Pearl

Default

I would defininetly get a thicker oil for your application and weather condition. The 10w40 sounds good from your list.
volkl23 is offline   Reply With Quote
Old 12-03-2005, 02:34 AM   #3
MattSTi
Scooby Specialist
 
Member#: 54885
Join Date: Feb 2004
Chapter/Region: MAIC
Location: NYC/WV
Vehicle:
2004 PSM STi
2006 Mazda MX-5 Race Car

Default

I was thinking along the same lines, thanks for the input.

-Matt
MattSTi is offline   Reply With Quote
Old 12-03-2005, 04:54 AM   #4
Unabomber
👌 Big Ron 👌
Moderator
 
Member#: 18062
Join Date: Apr 2002
Chapter/Region: MAIC
Location: I can save you a ton of cash
Vehicle:
on car parts so PM
me b4 j00 buy

Default

There's a forum for this type of question, and this aint it. I'll move it. That being said, there's also a sticky that deals with oil. 5W30 is what you should run no matter what your oil temp says.
Unabomber is offline   Reply With Quote
Old 12-03-2005, 06:53 AM   #5
heffergm
Scooby Specialist
 
Member#: 34672
Join Date: Mar 2003
Location: Northern VA
Vehicle:
2003 wrx
WR Blue Pearl

Default

Quote:
Originally Posted by Unabomber
There's a forum for this type of question, and this aint it. I'll move it. That being said, there's also a sticky that deals with oil. 5W30 is what you should run no matter what your oil temp says.
I'd beg to differ. But like you said, it can be debated elsewhere.
heffergm is offline   Reply With Quote
Old 12-03-2005, 07:48 AM   #6
Uncle Scotty
*** Banned ***
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

Uncle Scotty is offline   Reply With Quote
Old 12-03-2005, 11:38 AM   #7
MattSTi
Scooby Specialist
 
Member#: 54885
Join Date: Feb 2004
Chapter/Region: MAIC
Location: NYC/WV
Vehicle:
2004 PSM STi
2006 Mazda MX-5 Race Car

Default

Wow, I could have sworn that was the proper forum?

Anyways, I still feel like running ~250* oil temp would necessitate a heavier oil, I'm just not sure what to go with.

Does anyone have experience running heavier oils? I've noticed a few people in AZ run 10w40.
MattSTi is offline   Reply With Quote
Old 12-03-2005, 06:45 PM   #8
volkl23
Scooby Specialist
 
Member#: 39092
Join Date: Jun 2003
Chapter/Region: MWSOC
Location: St. Louis MO
Vehicle:
2004 WRX STi
Java Black Pearl

Default

I would be more worried about the shearing effects of a light oil than the temperature. The higher weight oils will be better for this.
volkl23 is offline   Reply With Quote
Old 12-05-2005, 12:06 AM   #9
06WRXTR
Scooby Specialist
 
Member#: 96668
Join Date: Sep 2005
Location: SW Missouri
Vehicle:
2006 WRX TR

Default

5w-40 is prolly the best suited app
06WRXTR is offline   Reply With Quote
Old 12-05-2005, 11:47 AM   #10
AndyH
Scooby Specialist
 
Member#: 2133
Join Date: Aug 2000
Chapter/Region: MWSOC
Location: Minneapolis, MN USA
Vehicle:
2005 STi WRB/Gold
2005 S4 Avant

Default

I'd probably use Mobil 1 5w-40...readily available at most auto parts stores and it's an excellent-quality oil. Wal-Mart sells it in 5-quart jugs for $20...a bargain, IMHO.
AndyH is offline   Reply With Quote
Old 12-05-2005, 01:15 PM   #11
Hayes
Scooby Specialist
 
Member#: 11808
Join Date: Oct 2001
Location: Cape Coral,FL
Default

I would go with Mobil 1 SUV 5w40 oil.
Hayes is offline   Reply With Quote
Old 12-06-2005, 12:06 AM   #12
Pete Holt
NASIOC Supporter
 
Member#: 12
Join Date: Jun 1999
Chapter/Region: MWSOC
Location: Appleton, WI
Vehicle:
2013 G37S 6spd sedan
Moonlight White

Default

I used to run Mobil 1 10W30 in the summer months if I knew the car was going to be driven hard and I never had any problems.
Pete Holt is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Which intake is recommended for a 2007 STI??? weestar310 Factory 2.5L Turbo Powertrain (EJ Series Factory 2.5L Turbo) 7 01-15-2010 06:53 PM
WRX--Good for road course & autox? Fa5tCoEvo General Community 22 11-01-2006 10:21 PM
DCCD Setting For Road Course Use Onedwn5up Transmission (AT/MT) & Driveline 3 10-08-2006 04:11 PM
Which EM is recommended for a daily driver? ECUTek, AP, UTEC... BGPKR Engine Management & Tuning 29 11-30-2004 10:00 AM
Which weight oil to use in this situation? armand1 Service & Maintenance 12 02-07-2002 02:16 PM

All times are GMT -4. The time now is 02:35 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2016 Axivo Inc.
Copyright ©1999 - 2016, North American Subaru Impreza Owners Club, Inc.