Welcome to the North American Subaru Impreza Owners Club Friday March 29, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 12-12-2008, 05:21 PM   #51
Coati
Scooby Guru
 
Member#: 9106
Join Date: Aug 2001
Chapter/Region: SCIC
Location: 2020 Crosstrek Hybrid
Vehicle:
2015 FXT - DGM
2008 STI - Aspen White

Wink

Quote:
Originally Posted by z&cobb View Post

The next oil change will be with Penzoil Platinum, and the one after that with Valvoline.

I'll report back if one of those finally ruins my engine or turbo (currently 150,000 miles).:
For people like us, maybe it will upset the engines' delicate balance.
* Registered users of the site do not see these ads.
Coati is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 12-12-2008, 06:15 PM   #52
dictoresno
Scooby Specialist
 
Member#: 139816
Join Date: Feb 2007
Chapter/Region: Tri-State
Location: NJ
Vehicle:
2019 Impreza
White

Default

i was considering going to Rotella-T 5W-40 on my next change. i blew up my first motor on M1 5-30. after a brand new block and two oil changes on RP, about 7000 miles, i was wondering if the 5-40 rotella would be a good choice. ive read over and over on here and the bob is the oil guy site trying to research the oil. so again, how many people have been running Rotella-T 5W-40 and have success with it? i really dont want to risk blowing this car up again. i dont track it or race it its just a daily driver.
dictoresno is offline   Reply With Quote
Old 12-12-2008, 06:21 PM   #53
mxpunk
Scooby Specialist
 
Member#: 132130
Join Date: Nov 2006
Chapter/Region: TXIC
Location: Austin, Texas
Vehicle:
2002 Ford F-150
Graphite Gray

Default

mobile 1 synthetic is like italian olive oil..it sux
mxpunk is offline   Reply With Quote
Old 12-14-2008, 05:17 PM   #54
bluesubie
Scooby Guru
 
Member#: 767
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: N.J.
Vehicle:
04 FXT
20 OB Onyx XT

Default

Quote:
Originally Posted by z&cobb View Post
Perhaps Valvoline increased the Zinc antiwear additive to the old formulation level of Mobil 1, or increased it over that level.
The levels have not changed to the "old formulation level of "Mobil1", which would be ILSAC GF-3. The levels are the same as current GF-4 specs. Some are speculating that Synpower may already meet some of the GF-5 specs.
Quote:
Turbocharger Protection
Use of the TEOST 33C deposit bench test is being considered in GF-5 to evaluate Turbocharger Protection.

During this test, problems were observed with oxidative degradation/thermal coking of engine oil in the turbocharger bearing area during hot shut-down. It is necessary to protect the bearing from deposits because deposit build-up in the turbocharger bearing area can lead to loss of engine performance and possibly engine failure.

Turbocharger Protection is important, but there are tradeoffs when it comes to Fuel Economy. The detergent and dispersant components that go the metal surfaces to keep the engine's parts clean and prevent deposit build-up in the turbocharger, compete against the friction modifier components that go to the metal surfaces to reduce friction and improve fuel economy.
Quote:
Originally Posted by z&cobb View Post
Mobil 1 is kinda in the thread title. But I guess oil made in Germany is what all US drivers should use. German technology FTW.
It's probably the best 30 grade that you're going to find "off the shelf" so why not use it? It's not necessarily that it's "German technology" but it's an oil that meets European ACEA A3 requirements for shear stability.

-Dennis
bluesubie is offline   Reply With Quote
Old 12-14-2008, 06:52 PM   #55
Uncle Scotty
*** Banned ***
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

Quote:
Originally Posted by mxpunk View Post
mobile 1 synthetic is like italian olive oil..it sux


Italian oilve oil is quite good, in fact....depending on brand and quality used.

JUST LIKE motor oil.

Your analogy if fraught with error.
Uncle Scotty is offline   Reply With Quote
Old 12-18-2008, 04:27 PM   #56
subarurabbit
Scooby Guru
 
Member#: 4083
Join Date: Feb 2001
Chapter/Region: NESIC
Location: Reading, MA
Vehicle:
2018 OB 3.6R Limited
magentite gray

Default

I think there is a reference to the imitation olive oil from NY/NJ being sold in CT in that post.

On 10k miles wish Amsoil ASL 5w30... 5k more to go!
subarurabbit is offline   Reply With Quote
Old 12-18-2008, 07:49 PM   #57
Uncle Scotty
*** Banned ***
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

Quote:
Originally Posted by subarurabbit View Post
I think there is a reference to the imitation olive oil from NY/NJ being sold in CT in that post.

On 10k miles wish Amsoil ASL 5w30... 5k more to go!
yoar not one of those guys that thinks running oil for 15k miles is a good thing are you????


'cuz it isnt and thats just plain nuts
Uncle Scotty is offline   Reply With Quote
Old 12-18-2008, 09:13 PM   #58
GullyWagon07
Scooby Specialist
 
Member#: 164171
Join Date: Nov 2007
Chapter/Region: SCIC
Location: OC
Vehicle:
08 EvoX <3 Wagon
rear prodrive plate frame

Default

^serious.....

ill go max 4k on my gc 0w-30 on how spirited i drive, including stop and go, car getting turned on and off......and etc. etc.
GullyWagon07 is offline   Reply With Quote
Old 12-18-2008, 09:33 PM   #59
mikeythejew
Scooby Specialist
 
Member#: 141672
Join Date: Feb 2007
Default

The best oils are usually found in convenience stores. They are usually marked API "SA". We all know an "A" is the best grade.
mikeythejew is offline   Reply With Quote
Old 12-19-2008, 08:55 AM   #60
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

Quote:
Originally Posted by mikeythejew View Post
The best oils are usually found in convenience stores. They are usually marked API "SA". We all know an "A" is the best grade.
Written with sarcasm, I'm sure
AndyH is offline   Reply With Quote
Old 12-19-2008, 09:42 PM   #61
Rom3BreaK
Scooby Newbie
 
Member#: 186995
Join Date: Aug 2008
Location: NW Connecticut
Vehicle:
1992 3000gt VR4
Java Black Pearl

Default

http://ferrarichat.com/forum/faq.php...tor_oil_basics

Hopefully this will help, although long, it's definitely worth the read.

The conclusions I reached after having read the article are as follows:
Run a 10w (or possibly a 5w) oil as today's 0w oils don't resist shearing well. If it wasn't for the viscosity shearing affect of today's oil, 0w would be the best. Unfortunately, a good 0W oil is not yet available.
Motul 300V or Redline are best because they are ester based oils and thus resist viscosity shear much better than Mobil 1 does. I'm not positive but I think I recall hearing that Royal Purple is ester based as well.

I would personally not run anything over a 10w35 oil in a suby, although admittedly I'm not sure about information regarding normal operating temperature for your cars, but I believe they don't run too hot (unless racing conditions are present).

Bottom line: I would run full synth. I would not run M1. I would run an ester based oil.
Rom3BreaK is offline   Reply With Quote
Old 12-20-2008, 12:03 AM   #62
Uncle Scotty
*** Banned ***
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

Quote:
Originally Posted by Rom3BreaK View Post
http://ferrarichat.com/forum/faq.php...tor_oil_basics

Hopefully this will help, although long, it's definitely worth the read.

The conclusions I reached after having read the article are as follows:
Run a 10w (or possibly a 5w) oil as today's 0w oils don't resist shearing well. If it wasn't for the viscosity shearing affect of today’s oil, 0w would be the best. Unfortunately, a good 0W oil is not yet available.
Motul 300V or Redline are best because they are ester based oils and thus resist viscosity shear much better than Mobil 1 does. I'm not positive but I think I recall hearing that Royal Purple is ester based as well.

I would personally not run anything over a 10w35 oil in a suby, although admittedly I'm not sure about information regarding normal operating temperature for your cars, but I believe they don't run too hot (unless racing conditions are present).

Bottom line: I would run full synth. I would not run M1. I would run an ester based oil.
some of that is out of date and anything with a turbo is harder on oil that those without and ive never seen any 10w35 and I(and others) could go on and on and on
Uncle Scotty is offline   Reply With Quote
Old 12-21-2008, 10:50 AM   #63
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

Quote:
Originally Posted by Rom3BreaK View Post
[url]... Unfortunately, a good 0W oil is not yet available.
I beg to differ, Castrol Syntec 0W-30 (a.k.a., "German Castrol" or simply "GC") has proven to be a very stout motor oil that is very resistant to shearing.
AndyH is offline   Reply With Quote
Old 12-21-2008, 03:27 PM   #64
bluesubie
Scooby Guru
 
Member#: 767
Join Date: Jan 2000
Chapter/Region: Tri-State
Location: N.J.
Vehicle:
04 FXT
20 OB Onyx XT

Default

Quote:
Originally Posted by AndyH View Post
I beg to differ, Castrol Syntec 0W-30 (a.k.a., "German Castrol" or simply "GC") has proven to be a very stout motor oil that is very resistant to shearing.
Agreed. And I'm having very good results with Amsoil SSO 0w-30. It stayed in grade after 8,000 miles of a brand new turbo, towing, sprited driving, several days of 100+F temps and off-roading.

Another thing about that article, Dr. Haas is a surgeon and car enthusiast. He is not a tribologist. He does use 20 grades in his exotics , but he does not use girly-man thin oils like Mobil1. Only Red Line or Renewable Lubricants Inc. Red Line 5W-20 would resist shearing better than most (if not all) Energy Conserving xw-30's like Mobil1 because of it's high HTHS.

-Dennis
bluesubie is offline   Reply With Quote
Old 12-24-2008, 01:14 PM   #65
Astroguy
Scooby Newbie
 
Member#: 46392
Join Date: Oct 2003
Location: Campbell, CA
Vehicle:
2004 WRX
Black

Default

I commonly read that Rotella 5w40 is recommended, any thoughts on the 15w40 variety for those of us that live in mild climates (say greater than 30 F temps)? I've actually read some threads at BITOG suggesting the 15w40 is more shear stable than the 5w40, for example here... http://www.bobistheoilguy.com/forums...ue#Post1220861

So despite 5w40 being synthetic and 15w40 plain dino, if the 15w40 is more shear stable wouldn't it be a better candidate for mild climate or summer use?...and also extended change intervals?
Astroguy is offline   Reply With Quote
Old 12-24-2008, 07:53 PM   #66
esteve
Scooby Specialist
 
Member#: 28716
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Los Angeles
Vehicle:
2006 STI

Default

Quote:
Originally Posted by dictoresno View Post
i was considering going to Rotella-T 5W-40 on my next change. i blew up my first motor on M1 5-30. after a brand new block and two oil changes on RP, about 7000 miles, i was wondering if the 5-40 rotella would be a good choice. ive read over and over on here and the bob is the oil guy site trying to research the oil. so again, how many people have been running Rotella-T 5W-40 and have success with it? i really dont want to risk blowing this car up again. i dont track it or race it its just a daily driver.
By all accounts, Rotella T 5W-40 is an excellent oil and I'll probably be switching to it for my next oil change due to its value and availability. The only possible concern is if your car burns oil, the extra phosphorous in Rotella might damage your cats.

A cSt viscosity @ 100 degrees C of 15.5 makes me salivate!
esteve is offline   Reply With Quote
Old 12-24-2008, 08:04 PM   #67
Uncle Scotty
*** Banned ***
 
Member#: 16200
Join Date: Mar 2002
Vehicle:
OK buy Nates beans
westcoastroasting.com

Default

Quote:
Originally Posted by Astroguy View Post
I commonly read that Rotella 5w40 is recommended, any thoughts on the 15w40 variety for those of us that live in mild climates (say greater than 30 F temps)? I've actually read some threads at BITOG suggesting the 15w40 is more shear stable than the 5w40, for example here... http://www.bobistheoilguy.com/forums...ue#Post1220861

So despite 5w40 being synthetic and 15w40 plain dino, if the 15w40 is more shear stable wouldn't it be a better candidate for mild climate or summer use?...and also extended change intervals?
well....i would say that if you prefer long change intervals.....4k+ miles....use the 5w40
if you are just gonna dump it every 3k.....use the 15w40
Uncle Scotty 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
Lots of mobile one synthetic motor oil! ryanjorunner Private 'For Sale' Classifieds 12 03-26-2006 08:51 AM
Mobil One vs. other synthetics AaronBBrown Service & Maintenance 81 12-18-2002 12:03 AM
Mobil One Synthetic SupaSench Tri-State Area Forum 13 06-11-2002 02:16 AM
i just mixed mobil 1 synthetic with valvoline synthetic (both 5w-30)... db97 Service & Maintenance 4 03-08-2002 09:50 PM
Mobil One synthetic Tranny fluid is it worth it Jimmy Normally Aspirated Powertrain 6 06-04-2001 07:14 AM

All times are GMT -4. The time now is 04:26 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.