An oil question...

jamapor · 04-06-2007, 03:40 PM

I've only had my car for 3 months now, but I've used Mobil 1 Synthetic every time.

I need an oil change now, and Annapolis Subaru is having a special on Castrol Synthetic ($34.95 with new filter)

Do I spend the $66.95 for the Mobil 1 Synthetic?

(Yes I could do this myself, but I really don't have the time)

* Registered users of the site do not see these ads.

big16gwrx · 04-06-2007, 03:50 PM

neither.... buy some royal purple!

Seeing StaRS · 04-06-2007, 03:53 PM

Motul FTW

(Annapolis carries it too. Hit up Jackie)

jamapor · 04-06-2007, 04:25 PM

Quote:

Originally Posted by Seeing StaRS

Motul FTW
(Annapolis carries it too. Hit up Jackie)

Any idea a price on this?

AllAWD · 04-06-2007, 04:25 PM

Switch to Motul 8100 X-cess 5w-40, about $40 for 5L jug. Andrewtech stocks it, not as far as Annapolis.

Mobil 1 is not so great in the WRX engine. 5w-30 is too thin.

kcook · 04-06-2007, 04:56 PM

i use castrol 5w-30 fully synthetic ... thats also what my dealer uses on all the subys

i was told to stay away from mobile 1

KanosWRX · 04-06-2007, 05:01 PM

I've always used mobil 1 for the last 5 years, never had a problem with it in my subaru's. You can pick up a 5 liter bottle at walmart for around 30-35 bucks, 5 bucks for a filter and your done.

AllAWD · 04-06-2007, 05:10 PM

I burned a quart every 3000 miles using Mobile 1 5w-30 in my WRX. Every other car in my family has used Mobil 1 with no problems. It depends on driving style also.

If you review oil analysis results you will see that Mobile 1 is quickly sheared to a 20 wt oil. It is designed to be very thin for fuel economy.

I switched to Motul at the advice of Andrew. He rebuilds Subaru engines daily and I trust his advice.

WRX Shenanigans · 04-06-2007, 05:16 PM

I've used castrol non-synthetic 5w-30 since day one and it has never burned a drop ::knocks on wood::

UrbonWRX · 04-06-2007, 05:48 PM

Quote:

Originally Posted by kcook

i use castrol 5w-30 fully synthetic ... thats also what my dealer uses on all the subys

i was told to stay away from mobile 1

I would like to know who told you that?! I wouldn't put anything other than Mobil 1 in my vehicles.

vet · 04-06-2007, 06:57 PM

I wouldn't say Mobil 1 is bad but it's definitely not all that. I'm using Castrol Syntec 0w-30 (GC). It made my engine run noticeably smoother. Great things are said about it over on bobistheoilguy.com

kts262 · 04-06-2007, 07:11 PM

I had A LOT of oil consumption with Mobil 1 as have a lot of other STi drivers on IWSTI.com. (~250 miles/quart)

I'm currently using Motul 8100 5w30 and my consumption has dropped significantly. (~2/3rd qt per 1k miles so far) I will probably switch to Motul 5w40 to see if the thicker oil helps reduce the consumption even more, once I get it under control I might try the German Castrol which has been popular with a lot of Subaru people.

siopao2000 · 04-06-2007, 07:56 PM

I've used the following:

Havoline 5w30 - first 10,000 miles with no oil consumption even with a couple autox's. Reading on Bitog, this seems to be a well liked oil.

German Castrol 0w30 - I've read good things about this oil but there are a few that still see problems while using it. I haven't had any problems at all. It's also closer to 5w40 according to the tests. Started using this oil after 10,000 miles and now have 29,000.

Mobil 1 5w30 - Didn't have any problems with m1 but I only used to for 4k miles. No oil consumption at all. This was during winter though with little to no hard driving. (Actually I had an autox class while using m1 and no consumption)

The best way to find out if the oil is really working for you is to get an oil analysis. There are many threads about it in the "Service and Maintenance" section of the boards.

http://www.bobistheoilguy.com/ is also a good place to read about oils.

ButtDyno · 04-06-2007, 07:59 PM

I've done M1 5w30 and gotten good oil analyses even with extended changes but never noticed it burning oil. Now you guys have me all paranoid

*runs to check engine*

siopao2000 · 04-06-2007, 08:03 PM

Quote:

Originally Posted by ButtDyno

I've done M1 5w30 and gotten good oil analyses even with extended changes but never noticed it burning oil. Now you guys have me all paranoid

*runs to check engine*

I remember reading one of your oil analysis. I think it said even after 5k miles, 10 autox's, and 2 track days the oil was still good.

I'm sticking with the German Castrol since I'm affraid of M1. Andrew did advise me on using a higher weight because of piston slap or something. I don't remember. I'll ask him next time I go to their shop.

BryanH · 04-06-2007, 08:41 PM

I used to go through a quart every 500 miles in my 03 WRX on Mobil1...I switched to Castrol Syntech and consumption dropped to a quart every 2000 miles.

SubieDugie · 04-06-2007, 10:45 PM

I have used Castrol, Mobile1, Royal Purple, and AMSoil. After 2-3000 miles on anything other than Royal Purple, I can't get a good reading on the dip stick. I switched from R.P. a couple of oil changes back because it was cheaper, and I wanted to see how it would work out in my motor. Instantly I noticed oil temp was running higher than w/ R.P., and at about 5000 miles on the the AMSoil I couldn't read the oil on the dip stick. When I had the oil changed, it didn't look too bad, and still felt pretty slippery. I am back with Royal Purple and happier with my oil temp. If it does get up to the temp that the AMSoil would be at, it is much quicker to cool down; water temp appears to be a little cooler as well. I found a guy in PA on Ebay selling Royal Purple 5w30 cases for just over $76. I received my case within 4 days of payment. You can buy 6, case, 5 gals. in various viscosities.

kts262 · 04-07-2007, 12:34 AM

Quote:

Originally Posted by ButtDyno

I've done M1 5w30 and gotten good oil analyses even with extended changes but never noticed it burning oil. Now you guys have me all paranoid

*runs to check engine*

If youre UOAs look good and it's not consuming oil you're fine. Some people have had great success with M1 in their Subies, others haven't. I was one of the unlucky people who didn't have good luck with it.

Their 5w30 did give me less consumption then their 10w30 did. I thought the 10w30 would be thicker but M1's 10w30 is actually thinner in most temperature ranges compared to their 5w30.

Gotta love all the info BITOG can provide.

psyber_0ptix · 04-07-2007, 03:28 AM

i didnt have any luck with mobil 1. Royal purple wasnt that much better for me either, but i did have great luck with amsoil.

there are different formulations, but i think i ran the ASL 5w-30

4x4STi · 04-07-2007, 04:39 AM

mobil one always winter 5w30 summer 10w30
car 04 sti 66,000 miles . oil changes done every 5k to 6k , with out any extra oil needed

drrice · 04-07-2007, 07:04 AM

amsoil

jamminj6693 · 04-07-2007, 07:14 AM

Mobil One works, stick with it!
I use it and i reckomend it to all my Subaru Customers.

SubieDugie · 04-07-2007, 12:56 PM

Anyone know where I can get an oil analysis done? I am thinking about trying to have it done at AIMD oil analysis lab on Norfolk base. If I can smooth talk someone; maybe a six pack or 2 of brew will get it done.
Have any of you guys using AMSoil noticed oil temps rise with it? Even going from FL to VA it didn't really any cooler. As far as Castrol, it seems to do a really good job of cleaning and capturing to dirt; I believe that is why it came out of my car so dark. But, I think over all, as long as you are keeping an eye on your oil and changing it within 7500 miles, you are good. I just don't like how I can't get a good read on my oil with the STi's turbo. Anyone know where I can get a Crawford air oil separator?

kts262 · 04-07-2007, 01:09 PM

http://blackstone-labs.com/ is where I've been getting my UOA from.

24 · 04-07-2007, 03:54 PM

I have a bridge for sale, anyone interested?

04-06-2007, 03:40 PM	#1
jamapor Scooby Specialist Member#: 111694 Join Date: Apr 2006 Chapter/Region: MAIC Location: Alexandria VA Vehicle: 2002 Bugeye clan Suspension is next...	An oil question... I've only had my car for 3 months now, but I've used Mobil 1 Synthetic every time. I need an oil change now, and Annapolis Subaru is having a special on Castrol Synthetic ($34.95 with new filter) Do I spend the $66.95 for the Mobil 1 Synthetic? (Yes I could do this myself, but I really don't have the time) * Registered users of the site do not see these ads.

04-06-2007, 04:25 PM	#5
AllAWD Scooby Specialist Member#: 17079 Join Date: Apr 2002 Chapter/Region: MAIC Location: Alexandria, VA Vehicle: 2002 WRX 2001 SV650	Switch to Motul 8100 X-cess 5w-40, about $40 for 5L jug. Andrewtech stocks it, not as far as Annapolis. Mobil 1 is not so great in the WRX engine. 5w-30 is too thin. Last edited by AllAWD; 04-06-2007 at 04:31 PM.

04-06-2007, 07:56 PM	#13
siopao2000 Scooby Specialist Member#: 63247 Join Date: Jun 2004 Chapter/Region: MAIC Location: NOVA Vehicle: 1993 corolla	I've used the following: Havoline 5w30 - first 10,000 miles with no oil consumption even with a couple autox's. Reading on Bitog, this seems to be a well liked oil. German Castrol 0w30 - I've read good things about this oil but there are a few that still see problems while using it. I haven't had any problems at all. It's also closer to 5w40 according to the tests. Started using this oil after 10,000 miles and now have 29,000. Mobil 1 5w30 - Didn't have any problems with m1 but I only used to for 4k miles. No oil consumption at all. This was during winter though with little to no hard driving. (Actually I had an autox class while using m1 and no consumption) The best way to find out if the oil is really working for you is to get an oil analysis. There are many threads about it in the "Service and Maintenance" section of the boards. http://www.bobistheoilguy.com/ is also a good place to read about oils. Last edited by siopao2000; 04-07-2007 at 08:06 AM.

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04-06-2007, 03:50 PM	#2
big16gwrx Scooby Specialist Member#: 129459 Join Date: Oct 2006 Chapter/Region: MAIC Location: RVA Vehicle: 0000 Built gt3076	neither.... buy some royal purple!

04-06-2007, 03:53 PM	#3
Seeing StaRS Scooby Specialist Member#: 5294 Join Date: Mar 2001 Chapter/Region: MAIC	Motul FTW (Annapolis carries it too. Hit up Jackie)

04-06-2007, 04:56 PM	#6
kcook Scooby Newbie Member#: 78074 Join Date: Dec 2004 Chapter/Region: MAIC Location: NoVA Vehicle: 2005 STi Aspen White	i use castrol 5w-30 fully synthetic ... thats also what my dealer uses on all the subys i was told to stay away from mobile 1

04-06-2007, 05:01 PM	#7
KanosWRX Scooby Specialist Member#: 17904 Join Date: Apr 2002 Chapter/Region: MAIC Location: NOVA -> HI -> NOVA Vehicle: 010 STI Black	I've always used mobil 1 for the last 5 years, never had a problem with it in my subaru's. You can pick up a 5 liter bottle at walmart for around 30-35 bucks, 5 bucks for a filter and your done.

04-06-2007, 05:10 PM	#8
AllAWD Scooby Specialist Member#: 17079 Join Date: Apr 2002 Chapter/Region: MAIC Location: Alexandria, VA Vehicle: 2002 WRX 2001 SV650	I burned a quart every 3000 miles using Mobile 1 5w-30 in my WRX. Every other car in my family has used Mobil 1 with no problems. It depends on driving style also. If you review oil analysis results you will see that Mobile 1 is quickly sheared to a 20 wt oil. It is designed to be very thin for fuel economy. I switched to Motul at the advice of Andrew. He rebuilds Subaru engines daily and I trust his advice.

04-06-2007, 05:16 PM	#9
WRX Shenanigans Scooby Specialist Member#: 101378 Join Date: Nov 2005 Chapter/Region: MAIC Location: VA Vehicle: 2011 Sonata Harbor Gray Metallic	I've used castrol non-synthetic 5w-30 since day one and it has never burned a drop ::knocks on wood::

04-06-2007, 06:57 PM	#11
vet Scooby Newbie Member#: 42194 Join Date: Aug 2003 Chapter/Region: MAIC Location: MD Vehicle: 05 LGT Wagon GRP, sold 98 2.5rs Acadia	I wouldn't say Mobil 1 is bad but it's definitely not all that. I'm using Castrol Syntec 0w-30 (GC). It made my engine run noticeably smoother. Great things are said about it over on bobistheoilguy.com

04-06-2007, 07:11 PM	#12
kts262 Scooby Specialist Member#: 45464 Join Date: Oct 2003 Chapter/Region: MAIC Location: Hanover, MD Vehicle: 91 E30 325i 95 E36 325is	I had A LOT of oil consumption with Mobil 1 as have a lot of other STi drivers on IWSTI.com. (~250 miles/quart) I'm currently using Motul 8100 5w30 and my consumption has dropped significantly. (~2/3rd qt per 1k miles so far) I will probably switch to Motul 5w40 to see if the thicker oil helps reduce the consumption even more, once I get it under control I might try the German Castrol which has been popular with a lot of Subaru people.

04-06-2007, 07:59 PM	#14
ButtDyno Street's closed, pizza boy Member#: 17301 Join Date: Apr 2002 Chapter/Region: MAIC Location: Why do they always say the Evo Vehicle: is the "dark side" 06 Evo #7 STU, 05 Saabaru	I've done M1 5w30 and gotten good oil analyses even with extended changes but never noticed it burning oil. Now you guys have me all paranoid runs to check engine

04-06-2007, 08:41 PM	#16
BryanH Scooby Guru Member#: 993 Join Date: Feb 2000 Chapter/Region: MAIC Location: nova	I used to go through a quart every 500 miles in my 03 WRX on Mobil1...I switched to Castrol Syntech and consumption dropped to a quart every 2000 miles.

04-06-2007, 10:45 PM	#17
SubieDugie Scooby Newbie Member#: 119219 Join Date: Jul 2006 Chapter/Region: MAIC Location: VB, Va. Vehicle: 2005 STi WR Blue	I have used Castrol, Mobile1, Royal Purple, and AMSoil. After 2-3000 miles on anything other than Royal Purple, I can't get a good reading on the dip stick. I switched from R.P. a couple of oil changes back because it was cheaper, and I wanted to see how it would work out in my motor. Instantly I noticed oil temp was running higher than w/ R.P., and at about 5000 miles on the the AMSoil I couldn't read the oil on the dip stick. When I had the oil changed, it didn't look too bad, and still felt pretty slippery. I am back with Royal Purple and happier with my oil temp. If it does get up to the temp that the AMSoil would be at, it is much quicker to cool down; water temp appears to be a little cooler as well. I found a guy in PA on Ebay selling Royal Purple 5w30 cases for just over $76. I received my case within 4 days of payment. You can buy 6, case, 5 gals. in various viscosities.

04-07-2007, 03:28 AM	#19
psyber_0ptix Scooby Guru Member#: 60671 Join Date: Apr 2004 Chapter/Region: NESIC Location: Narragansett, Rhode Island Vehicle: 1991 e30 318i s50b30us swapped SOLD!	i didnt have any luck with mobil 1. Royal purple wasnt that much better for me either, but i did have great luck with amsoil. there are different formulations, but i think i ran the ASL 5w-30

04-07-2007, 04:39 AM	#20
4x4STi * Banned * Member#: 144412 Join Date: Mar 2007 Chapter/Region: MAIC Location: Richmond VA Vehicle: 2004 STi Aspen White Cobb Stage 2	mobil one always winter 5w30 summer 10w30 car 04 sti 66,000 miles . oil changes done every 5k to 6k , with out any extra oil needed

04-07-2007, 07:04 AM	#21
drrice Scooby Specialist Member#: 82595 Join Date: Mar 2005 Chapter/Region: MAIC Location: 'Cookies' Vehicle: let me see ur feetz	amsoil

04-07-2007, 07:14 AM	#22
jamminj6693 Scooby Newbie Member#: 94993 Join Date: Aug 2005 Chapter/Region: MAIC Location: Roanoke Va. Vehicle: 05 STI Agile Tuned Black	Mobil One works, stick with it! I use it and i reckomend it to all my Subaru Customers.

04-07-2007, 12:56 PM	#23
SubieDugie Scooby Newbie Member#: 119219 Join Date: Jul 2006 Chapter/Region: MAIC Location: VB, Va. Vehicle: 2005 STi WR Blue	Anyone know where I can get an oil analysis done? I am thinking about trying to have it done at AIMD oil analysis lab on Norfolk base. If I can smooth talk someone; maybe a six pack or 2 of brew will get it done. Have any of you guys using AMSoil noticed oil temps rise with it? Even going from FL to VA it didn't really any cooler. As far as Castrol, it seems to do a really good job of cleaning and capturing to dirt; I believe that is why it came out of my car so dark. But, I think over all, as long as you are keeping an eye on your oil and changing it within 7500 miles, you are good. I just don't like how I can't get a good read on my oil with the STi's turbo. Anyone know where I can get a Crawford air oil separator?

04-07-2007, 01:09 PM	#24
kts262 Scooby Specialist Member#: 45464 Join Date: Oct 2003 Chapter/Region: MAIC Location: Hanover, MD Vehicle: 91 E30 325i 95 E36 325is	http://blackstone-labs.com/ is where I've been getting my UOA from.

04-07-2007, 03:54 PM	#25
24 Scooby Specialist Member#: 39142 Join Date: Jun 2003 Chapter/Region: MAIC Location: Vienna, VA Vehicle: Memb er#: 39142 Join Date: Jun 2003	I have a bridge for sale, anyone interested?