What oil do you use?
 

I'm just wondering what [B]OIL[/B] everyone uses in their WRX (especially those with a GC8), I've just purchased an MY00 gc8 rex and I'm leaning towards using Penrite 10w-40 or Valvoline 10w-40 both Fully Synthetic :icon_eyes.

I've been told that the oil currently in the car is Penrite 5w-40 Fully Synthetic. Will their be any harm in putting Penrite or Valvoline 10w-40 Fully Synthetic in my next service?

I've heard Castrol Edge is quite popular? Why is this so, and are there any brands that I should stay clear of?

Thanks guys :)
Ashby

Been covered heaps of time, try searching.

Generally people suggest a semi-synthetic 10W40 oil. Apparently subaru engines don't like fully synthetic and causes blow-by/glazed bores from prolonged use, and then there's those that argue against this.

Change intervals+filters are more important as long it's a 10W40 oil. Only oil I've heard from most people to stay away from and is from a well known brand is castrol magnatec.

try vegetable oil, will save you money and you can recycle it to deepfry stuff

[QUOTE=gazlaz;591685]Been covered heaps of time, try searching.

[/QUOTE]

I spent 10 minutes searching. I could not find a thread or a post that involved a discussion about best oil for a wrx or best quality oil etc.?

[url]http://www.perth-wrx.com/vb/mechanicals/39282-oil.html[/url]

[url=http://www.rexnet.com.au/forum/index.php?/topic/136486-which-oil-to-use/]Which Oil To Use? - Rexnet Subaru Forums[/url]
[url=http://www.rexnet.com.au/forum/index.php?/topic/606-which-oil/]Which oil? - Rexnet Subaru Forums[/url]
[url=http://www.rexnet.com.au/forum/index.php?/topic/76711-which-oil/]Which Oil? - Rexnet Subaru Forums[/url]
[url=http://www.rexnet.com.au/forum/index.php?/topic/34235-hey-which-oil-is-better-redline-or-motual/]hey which oil is better redline or motual - Rexnet Subaru Forums[/url]

Heaps on rexnet, there's at least one other big on on p-wrx which i remember where there was an arguement about fully synthetic mobil 1.

[QUOTE=gazlaz;591696][URL]http://www.perth-wrx.com/vb/mechanicals/39282-oil.html[/URL]

[URL="http://www.rexnet.com.au/forum/index.php?/topic/136486-which-oil-to-use/"]Which Oil To Use? - Rexnet Subaru Forums[/URL]
[URL="http://www.rexnet.com.au/forum/index.php?/topic/606-which-oil/"]Which oil? - Rexnet Subaru Forums[/URL]
[URL="http://www.rexnet.com.au/forum/index.php?/topic/76711-which-oil/"]Which Oil? - Rexnet Subaru Forums[/URL]
[URL="http://www.rexnet.com.au/forum/index.php?/topic/34235-hey-which-oil-is-better-redline-or-motual/"]hey which oil is better redline or motual - Rexnet Subaru Forums[/URL]

Heaps on rexnet, there's at least one other big on on p-wrx which i remember where there was an arguement about fully synthetic mobil 1.[/QUOTE]

Righto, well i dont use rexnet and never have used it. And i literally just typed "which oil?" into search and it didnt come up with the Which Oil? thread.

Fucked if i know how to find a thread. I typed "Oil", "best oil", "best quality oil", and a couple others and nothing relevant came up :confused:

Thanks for the rexnet links tho :)

Hi Ashby

Another big discussion on oils from 06

[url]http://www.perth-wrx.com/vb/mechanicals/6558-engine-oil-recommendations.html[/url]

Hope that helps.
Tin :)

[QUOTE=tinno;591701]Hi Ashby

Another big discussion on oils from 06

[URL]http://www.perth-wrx.com/vb/mechanicals/6558-engine-oil-recommendations.html[/URL]

Hope that helps.
Tin :)[/QUOTE]

Thanks man, been reading through the thread for the last 20 minutes. It's quite informing :)

genuine subaru 5w-30 in my gc8

[QUOTE=gazlaz;591685]Been covered heaps of time, try searching.

Generally people suggest a semi-synthetic 10W40 oil. Apparently subaru engines don't like fully synthetic and causes blow-by/glazed bores from prolonged use, and then there's those that argue against this.

[/QUOTE]

This is incorrect, after the first service, eg, the run in period, Subaru recommend only fully synthetic oil in the turbo cars.
In fact, the new FB series engines can only run on fully synthetic oil or severe engine damage may result.
Genuine Subaru synthetic oil is repackaged Castrol Edge 5w-30.
Its all I use.