Welcome to the North American Subaru Impreza Owners Club Saturday August 23, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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 > Built Motor Discussion

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 04-16-2009, 10:51 PM   #1
PirateSanchez
Scooby Newbie
 
Member#: 106020
Join Date: Jan 2006
Default Just curious, what oil do you run in your built motor?

Post break in, what oil do you run in your block?

I'm trying to figure out the best oil for a block with CP pistons 100mm and eagle rods, oem heads, and would love to hear what brand/viscosity oils you guys have had success/problems with.

Cheers!
* Registered users of the site do not see these ads.
PirateSanchez is offline   Reply With Quote
Old 04-16-2009, 10:53 PM   #2
AKSubieDubie
Scooby Specialist
 
Member#: 190003
Join Date: Sep 2008
Chapter/Region: AKIC
Location: Fairbanks Alaska
Vehicle:
2000 RSTi BW8375
Blue

Default

It kind of depends what your bearing clearances are / oil pump. I'm using 5w40 rotella... going to use some napa 10w40 for 2nd break in
AKSubieDubie is offline   Reply With Quote
Old 04-16-2009, 11:33 PM   #3
stu
Scooby Specialist
 
Member#: 25768
Join Date: Oct 2002
Chapter/Region: RMIC
Location: CO springs
Vehicle:
35R bugeye
Slowbaru

Default

valvoline synthetic 5 w30
stu is offline   Reply With Quote
Old 04-16-2009, 11:36 PM   #4
Tony1
Scooby Newbie
 
Member#: 204092
Join Date: Feb 2009
Location: Rowlett TX
Vehicle:
2001 8 second Integr
Red

Default

We run Brad Penn Racing Oil in all our engines. Amazing stuff and reasonably priced.
Tony1 is offline   Reply With Quote
Old 04-17-2009, 12:16 AM   #5
texas05sti
Scooby Guru
 
Member#: 126242
Join Date: Sep 2006
Chapter/Region: TXIC
Location: RIP Seannie 6/16/07
Vehicle:
2005 STi/2012 GTR
TXIC's most loved

Default

I also run the Brad Penn. They make a specific oil for break in and then 20w-50 post after that.
texas05sti is offline   Reply With Quote
Old 04-17-2009, 02:35 AM   #6
berdugo
Scooby Specialist
 
Member#: 163108
Join Date: Oct 2007
Chapter/Region: International
Location: Philippines
Vehicle:
07 EuroDM STi 2.5L
Silver

Default

Mobil 20W-50 during break in, Amsoil SAE 60 after break in
berdugo is offline   Reply With Quote
Old 04-17-2009, 03:03 AM   #7
jays05
Scooby Specialist
 
Member#: 78165
Join Date: Dec 2004
Chapter/Region: South East
Location: SC
Vehicle:
05 STI 35r + e85

Default

Rotella 15w40. I am gonna try the Brad Penn 20w50 when it warms up a bit more.
jays05 is offline   Reply With Quote
Old 04-17-2009, 06:56 AM   #8
cribbie
Scooby Specialist
 
Member#: 184505
Join Date: Jul 2008
Chapter/Region: E. Canada
Location: Ontario
Vehicle:
2003 WRX
Sonic yellow

Default

why so thick of an oil?
cribbie is offline   Reply With Quote
Old 04-17-2009, 07:05 AM   #9
berdugo
Scooby Specialist
 
Member#: 163108
Join Date: Oct 2007
Chapter/Region: International
Location: Philippines
Vehicle:
07 EuroDM STi 2.5L
Silver

Default

Quote:
Originally Posted by cribbie View Post
why so thick of an oil?
because it's very very hot here in the Philippines, and I don't have an oil cooler. my oil temp is 220F and my oil temp sensor is placed in an oil sandwich adapter, I bet it's much hotter up there in the cylinder head area. 220F and not yet stuck in traffic, max oil temp I had was 240F
berdugo is offline   Reply With Quote
Old 04-17-2009, 07:55 AM   #10
Mr_Snips
Scooby Specialist
 
Member#: 152117
Join Date: Jun 2007
Chapter/Region: SCIC
Location: Hills Have Eyes
Vehicle:
2012 Ford F150 ECO
White

Default

Also because its been proven the subies like a thicker oil...as in NOT MOBIL 1 5w/30
Mr_Snips is offline   Reply With Quote
Old 04-17-2009, 09:07 AM   #11
cribbie
Scooby Specialist
 
Member#: 184505
Join Date: Jul 2008
Chapter/Region: E. Canada
Location: Ontario
Vehicle:
2003 WRX
Sonic yellow

Default

Wouldn't thicker oil retain more heat? Thinner oil will flow better witch means it is moving more oil across those high temp areas removing more heat. its like more coolant traveling quicker thru your rad.
Maybe I am thinking like a dinosaur and not grasping this entirely.
cribbie is offline   Reply With Quote
Old 04-17-2009, 09:22 AM   #12
q_dubz
Scooby Newbie
 
Member#: 168482
Join Date: Jan 2008
Location: DC
Default

Quote:
Originally Posted by cribbie View Post
Wouldn't thicker oil retain more heat? Thinner oil will flow better witch means it is moving more oil across those high temp areas removing more heat. its like more coolant traveling quicker thru your rad.
Maybe I am thinking like a dinosaur and not grasping this entirely.
thicker/denser oil has more molecules to take away more heat. think about how a intercooler work. the more fins there are internally the more heat it takes away.
q_dubz is offline   Reply With Quote
Old 04-17-2009, 09:29 AM   #13
trbowrx
Scooby Specialist
 
Member#: 50770
Join Date: Dec 2003
Chapter/Region: MAIC
Location: VA
Vehicle:
08 STi
04 536whp STi Sold!

Default

i run the Motul 300V 15-50 oil in my built block car and am having great luck with it!!
trbowrx is offline   Reply With Quote
Old 04-17-2009, 01:39 PM   #14
doza
Scooby Newbie
 
Member#: 171420
Join Date: Feb 2008
Chapter/Region: TXIC
Location: Austin, TX
Vehicle:
2004 WRX Wagon
Black

Default

Mobil 1 15w-50 is what my tuner recomends but I cant wait for my car to warm up 10 mins before driving. This is in Texas where the super hot summers make cars very hot and the 15w-50 gives better protection at extreme temps...
doza is offline   Reply With Quote
Old 04-17-2009, 02:34 PM   #15
06njsti
Scooby Guru
 
Member#: 150986
Join Date: Jun 2007
Chapter/Region: Tri-State
Location: South Jersey
Vehicle:
06 #001 LSB STi

Default

nobody runs any motul on the street?
06njsti is offline   Reply With Quote
Old 04-17-2009, 05:25 PM   #16
slowmike
Scooby Specialist
 
Member#: 24890
Join Date: Sep 2002
Chapter/Region: SCIC
Location: All I wanted was a Pepsi
Vehicle:
2002 Jackwagon
WRB GG

Default

My engine likes Rotella 15-40 now that's it's broken in
slowmike is offline   Reply With Quote
Old 04-17-2009, 08:40 PM   #17
Rickyh
Scooby Specialist
 
Member#: 40453
Join Date: Jul 2003
Chapter/Region: South East
Location: Metairie, Louisiana
Default

plain valvoline 20w50
Rickyh is offline   Reply With Quote
Old 04-17-2009, 08:46 PM   #18
White out
Scooby Guru
 
Member#: 46277
Join Date: Oct 2003
Chapter/Region: SCIC
Location: Michigan
Vehicle:
** Ring Time of
7:43.5

Default

Quote:
Originally Posted by slowmike View Post
My engine likes Rotella 15-40 now that's it's broken in
+1

Nick
White out is offline   Reply With Quote
Old 04-17-2009, 09:23 PM   #19
Hayaboosted
Scooby Specialist
 
Member#: 60042
Join Date: Apr 2004
Chapter/Region: MWSOC
Location: Janesville, Wisconsin
Vehicle:
2004 WRX STI
Rotated T67 ALLABOUTSPEED

Default

Rotella 15w 40 for myself
Hayaboosted is offline   Reply With Quote
Old 04-17-2009, 11:01 PM   #20
trbowrx
Scooby Specialist
 
Member#: 50770
Join Date: Dec 2003
Chapter/Region: MAIC
Location: VA
Vehicle:
08 STi
04 536whp STi Sold!

Default

Quote:
Originally Posted by 06njsti View Post
nobody runs any motul on the street?
i do every day! look a few posts up
trbowrx is offline   Reply With Quote
Old 04-18-2009, 11:17 AM   #21
wrx_driver_2002
NASIOC Supporter
 
Member#: 25952
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Under your hood :-)
Vehicle:
1995 Impreza Coupe
w/ "Extras" :-)

Default

I run castrol synthetic 5W50
wrx_driver_2002 is offline   Reply With Quote
Old 04-18-2009, 12:21 PM   #22
slava from goshen
Scooby Specialist
 
Member#: 152176
Join Date: Jun 2007
Chapter/Region: MWSOC
Location: Goshen, IN
Vehicle:
2001 2xImpreza 2.5RS
BRP/SRP

Default

Quote:
Originally Posted by Hayaboosted View Post
Rotella 15w 40 for myself
so heavier is good for build (bored) engines? what about stock 07 sti engine that will see lots of abuse?
slava from goshen is offline   Reply With Quote
Old 04-18-2009, 12:27 PM   #23
RealStreet
NASIOC Vendor
 
Member#: 205916
Join Date: Mar 2009
Chapter/Region: South East
Location: I SELL ENGINE PARTS!
Vehicle:
2003 Subaru WRX
in the 10's and the bends

Default

I run 10w40 of whatever I can find... Synthetic or not. Hell, I've even put Car Quest oil in my car. It all goes to the same place and does the same ****.
RealStreet is offline   Reply With Quote
Old 04-18-2009, 02:32 PM   #24
flycaster
Scooby Specialist
 
Member#: 60142
Join Date: Apr 2004
Location: Bend, OR
Vehicle:
2011 WRX
Grey

Default

Quote:
Originally Posted by doza View Post
Mobil 1 15w-50 is what my tuner recomends but I cant wait for my car to warm up 10 mins before driving...
Viscosity doesn't affect warm-up whatsoever, just oil pressure. I drive my car immediately after cold start, in below 0f temps, but I have to wait for the oil pressure to stabilize before I hop on it...I really don't understand your problem here.
flycaster is offline   Reply With Quote
Old 04-19-2009, 04:36 PM   #25
tekfoc
Scooby Specialist
 
Member#: 21392
Join Date: Jul 2002
Chapter/Region: Tri-State
Location: NEW YORK CITY
Vehicle:
2014 45 AMG MB
WHITE /07 STI IS SOLD

Default

IM running silkolene 10w 50 synthetic for a while . love this oil .
tekfoc 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 Oil do you run in your Subie?? timemasheen General Community 2 06-22-2008 11:00 AM
What psi do you run in your tires? gtbensley General Community 61 06-01-2008 07:35 PM
Question: What brand/weight motor oil are you running in your Subaru? Black-STi North West Impreza Club Forum -- NWIC 43 08-02-2006 10:17 AM
what kind of oil do you put in your wrx? scoobypuff Southern California Impreza Club Forum -- SCIC 10 04-27-2002 12:59 PM
What octane fuel do you run in your 'preza? erice1984 Normally Aspirated Powertrain 0 03-23-2002 09:30 PM


All times are GMT -4. The time now is 03:50 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.