Welcome to the North American Subaru Impreza Owners Club Saturday October 10, 2015
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Technical > Service & Maintenance

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. 
Thread Tools Display Modes
Old 07-31-2009, 11:21 AM   #1
Scooby Newbie
Member#: 183054
Join Date: Jun 2008
Location: Detroit
2002 WRX Sedan
World Rally Blue Pearl

Default Castrol 5w-50 or M1 0w-40 or Valvoline Syn 5w-40

here's my dilemma, I'm doing an oil change on my wife's Land Rover which only takes Mobile 1 0w-40, Castrol Syntec 5W-50 or Valvoline Synpower 5w-40. There's a few others, but they're only available overseas I think. I was thinking it might be easier and more cost efficient if I could buy this expensive oil in larger quantities and use it in both her truck and my 2002 WRX? Has anyone ever used either of these oils in their WRX? Or am I wasting my time and should just get a dedicated oil for my Subaru. I know I should go on Bob Is the Oil Guy and do some research, but to be honest, there's just too much info on there. I end up just getting frustrated. So, I just thought I'd ask for a few opinions on here. BTW my WRX only has very minor modifications and is mostly stock.
* Registered users of the site do not see these ads.
DetroitMatt is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 07-31-2009, 11:38 AM   #2
Scooby Specialist
Member#: 12344
Join Date: Nov 2001
Chapter/Region: MAIC
Location: Mountains of Maryland
2002 2JC


Strange that they limit the oil brands like that.

What's the recommended oil change interval?

If it's long I would probably go with the 5w-50. However, that's not exactly right for the wrx.

Not many people like Mobil synthetics here and it's a 0w. The Valvoline 5w-40, would be within the scope of Subaru's recommendations. It seems logical to go for that in quantity.
z&cobb is offline   Reply With Quote
Old 07-31-2009, 11:48 AM   #3
Scooby Newbie
Member#: 183054
Join Date: Jun 2008
Location: Detroit
2002 WRX Sedan
World Rally Blue Pearl


Yeah, Land Rover says 12,000 miles between changes, which just seems really long to me, but I think that's they're reason behind recommending these types of oils. And they're VERY specific in the owners manual that these are the ONLY oils that should be used in the vehicle. Either way I thought it was a long shot, and I'm not a fan of M1 either, and I love Valvoline, seems like it's one of the better synthetics out there now. But I don't want to compromise the Subbie just because I'm trying to be cheap. I still need to think about it, but it sounds like the Valveoline Syn 5W-40 is probably the safest.
DetroitMatt is offline   Reply With Quote
Old 07-31-2009, 05:52 PM   #4
Scooby Guru
Member#: 126441
Join Date: Sep 2006
Chapter/Region: SCIC
Location: TPE
03 bugeye


m1 0w40 is a proven oil. the 5w40 same too.
check bobistheoilguy for some reviews. shouldn't take more than a few minutes to search for the oilsyou listed.
fastwrx25 is offline   Reply With Quote
Old 08-01-2009, 07:17 PM   #5
Uncle Scotty
*** Banned ***
Member#: 16200
Join Date: Mar 2002
OK buy Nates beans


out of all of those

the 5w40 valvoline
Uncle Scotty is offline   Reply With Quote

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
UOA: 2006 WRX 5MT Valvoline Synpower 5w-30 Mind Service & Maintenance 4 08-14-2007 01:11 PM
M1 Abrams tank or Blackhawk Helicopter tankerWRX Off-Topic 52 05-17-2006 11:08 PM
5W-50 synthetic in winter? 4banger Service & Maintenance 6 10-07-2005 12:01 PM
Cold weather and 5w-50...when should i worry? Kwyjibo Service & Maintenance 4 12-24-2002 10:26 AM
Valvoline syn gear oil good? shogunate83 Transmission (AT/MT) & Driveline 0 05-09-2002 01:19 AM

All times are GMT -4. The time now is 02:34 PM.

Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2015 Axivo Inc.
Copyright ©1999 - 2015, North American Subaru Impreza Owners Club, Inc.