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Old 10-14-2010, 06:09 PM   #1
msingell
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Default anyone NOT using synthetic oil?

i am looking for some na owners who dont use a synthetic oil. i am curious about any leaks / seepage that you may notice. or if you are one of the dime a dozen synthetic owners, you can chime in too regarding your seepage/leaks or lack thereof.
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Old 10-14-2010, 06:45 PM   #2
wmdoucette
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Mobil Super 1000 on both cars. The 07 has never shown a leak in 85000km. The RS has some coming down the back. I'm guessing rear main or separator plate but I've only been driving it for 5000km, and it has 150000 on it.
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Old 10-14-2010, 07:06 PM   #3
feint05
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running rotella t 15-40 in the fozz, you know that synthetic isnt all its cracked up to be, most people who really know what theyre talking about use dino oil. Dino oil is less likely to seep ooze and leak, i have a few leaks as my car has 130k and was not well maintaned and rebuilt cheap (jusst before i picked it up for 2k)
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Old 10-14-2010, 07:19 PM   #4
msingell
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thanks for the info! the reason i ask is because ive been using mobil 1 synth. since the 2nd oil change and ive been working on a oil leak on my car, most likely at the head gaskets. im just trying to piece together info as i consider the notion that all along i maybe should have been going the dino oil route.
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Old 10-14-2010, 07:24 PM   #5
DaWhiteScoob
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Never seen a leak yet. 48k Miles
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Old 10-14-2010, 07:30 PM   #6
djinn
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not using synthetic until warranty is up. I asked the tech that does changes to my car.
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Old 10-14-2010, 07:46 PM   #7
swede978
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I have been using Castrol GTX 5W-30 in both of my cars. The RS has over 269K and the Legacy has 156K. No leaks out of both of them except the spark plug wells on the Legacy. I am going to do the gaskets soon.
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Old 10-14-2010, 09:27 PM   #8
tiger2011
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I'm running Valvoline in mine and after 20K miles I'm not seeing any leaks or oil seep.
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Old 10-14-2010, 09:35 PM   #9
g8tr25i
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castrol gtx. no leaks
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Old 10-14-2010, 10:27 PM   #10
matthewlikewhoa
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I run whatever is on sale. Usually castrol or valvoline. The only leak I have is the valve cover gasket and the car has 99k on it.
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Old 10-15-2010, 10:20 AM   #11
RaineMan
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I'm running regular Havoline... I have some seepage by the filter itself, but I'm thinking that is due to technician incompetence from the last time it was changed. Taking it to the dealer tomorrow morning, will be switching over to synthetic at that time. Car has ~22,000 on it.
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Old 10-15-2010, 10:23 AM   #12
MY EJ20T
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valvoline synpower FTW
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Old 10-15-2010, 10:57 AM   #13
02darkRS
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i'm at 130k. I've been using valvoling synblend since i got it at 60k. I had the usual HG leak at around 80k. Nothing leaked after that until my timing jumped off & ruined the heads at around 88k.
Now, I have an 07 2.5i block in it. got it with around 40k & it has about 70K on it now. No leaks or HG issues with it at all.
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Old 10-15-2010, 11:29 AM   #14
HeyChris
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Leaks, no.

Burn/crank-case blow by, yes. But only when driving the snot out of it.
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Old 10-15-2010, 12:54 PM   #15
SubyMass
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'05RS with 120k and bone dry. Oil changed every 3-5k with... whatever. Its all slippery.
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Old 10-15-2010, 02:28 PM   #16
ibanez24_7
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Ive never run synthetic in any of my cars only my motorcycles. I run quakerstate in all my vehicles. I dont see the point of running synthetic unless your car is turning high rpms and pushing out some big ponies. My 02 TS has 119K on it and runs like a top. I have yet to find a reason to spend an extra $15-$20 for 5qts of synthetic oil. As long as you keep up on basic mainainence I dotn think oil brand means a damn thing, its all marketing schemes.
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Old 10-15-2010, 02:37 PM   #17
devilpenny
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I agree with the marketing schemes. I've never used synthetic and don't really care to pay more to do so. My 08's got 42k miles and I run on Pennzoil. Fossil fuels FTW!!!
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Old 10-15-2010, 03:44 PM   #18
RaceFaceXC
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if you use your car as a DD, syn will allow you to extend your oil change interval far enough taht it more than offsets the extra cost. there is crappy oil, both mineral and syn. apples and oranges. ****, half the "fully synthetic" oil marketed is actually a blend or a non syn base stock
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Old 10-15-2010, 03:49 PM   #19
WeldingHank
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with large containers of synthetic being so cheap at places like walmart, it doesn't make sense NOT to run it. seriously, you can get a 5 quart jug of valvoline syn for around $25, Which I think is very reasonable for something you can run for more than 3k without thinking about it.
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Old 10-15-2010, 04:02 PM   #20
2wickedWRX
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I have a wrx and only run non synthetic, Castrol gtx 5w30. Is it more common with na users to use synthetics? And why? Just had to chime in, sorry guys.
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Old 10-15-2010, 04:09 PM   #21
RaineMan
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I am switching to synthetic primarily so I can extend my oil change interval from 3000mi to 6000mi.
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Old 10-15-2010, 04:22 PM   #22
2wickedWRX
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^^^I can understand that, I am just tired of so many people thinking synthetic is the end all be all.
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Old 10-15-2010, 04:31 PM   #23
Gr3en
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No synthetic for me either. I use rotella 15w-40 in my 98 and my 05. No issues whatsoever.
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Old 10-15-2010, 05:16 PM   #24
msingell
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ive been using mobil 1 full synth every 3k. i am now experiencing a leak near the head gaskets. is seepage the same as a leak? im not sure why i chose to go the synth route, i was just following what seemed to be everyone elses lead.
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Old 10-15-2010, 09:25 PM   #25
williaty
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Quote:
Originally Posted by msingell View Post
i am looking for some na owners who dont use a synthetic oil. i am curious about any leaks / seepage that you may notice. or if you are one of the dime a dozen synthetic owners, you can chime in too regarding your seepage/leaks or lack thereof.
I had small seeps and severe leaks with both dino and synthetic in both our cars. Charles had his headgasket leaks on dino.

Quote:
Originally Posted by feint05 View Post
running rotella t 15-40 in the fozz, you know that synthetic isnt all its cracked up to be, most people who really know what theyre talking about use dino oil. Dino oil is less likely to seep ooze and leak, i have a few leaks as my car has 130k and was not well maintaned and rebuilt cheap (jusst before i picked it up for 2k)
The Rotella T 5w40 isn't all that amazing. It's a good oil for its intended purpose, but the 40 weight operating viscosity is higher than most RSes should use and the HTHS isn't as high as it could be.

The comment about dino vs synth is just moronic. There are good dino oils and good synthetic oils. There are crap oils labeled synthetic and crap oils labeled dino. It happens.

The biggest advantages to truly synthetic oils (lab-grown esters and whatnot) is their very high HTHS, long term sheer stability, and reduced viscosity change with temperature. All of those are qualities that can't be matched with mineral-oil based lubricants.

Quote:
Originally Posted by msingell View Post
ive been using mobil 1 full synth every 3k. i am now experiencing a leak near the head gaskets. is seepage the same as a leak? im not sure why i chose to go the synth route, i was just following what seemed to be everyone elses lead.
That **** you got going is a flat assed leak. There's A LOT of wet on that engine.
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