What Tuna said, I did it to very my rattly WRX 6yrs ago then it sat for 4yrs untouched but now after 2yrs of use it still runs perfect, we just drained the old oil, put 5L of diesel in it then let it run for about 10min until it was up to temp giving it a very light rev every few min, the amount of gunk that came out was amazing.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.

Learn something every day - I always thought that was a old man's tale.

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[COLOR=Black]Liberty GT Spec B tuned 240 HP & 372 Nm at the hubs.[/COLOR] "Instead of banning high performance cars - ban low performance drivers"

Just diesel? Stuff. Didnt think diesel had lubricating properties to make it safe to run for 10mins!

What stuff do you use to flush it through. Is it Subaru flush or something else??

Hmmm. Might try the diesel trick next service. Also make sure if you guys do put a flush/ diesel through it, to change your oil filter, and not do what some people I've seen do and just drop and refill the oil.. -_-

Diesel works for sure. Gets rid of the rattly rs heads issue for a few months.

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I am only an asshole on the internet :)

[SIGPIC][/SIGPIC]

can the same be done to the gearbox?

might consider it for both engine and gearbox for when i do the major at 200k

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98 gf8 Rip

We use Fortron enigne flush. I don't know where you can buy it from, we buy bulk

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Its just the internet dude, its not real.
F.B. Racing
01 WRX (STI badged)
2010 XR5 Focus
06 Impreza Hatch 2.0i

Diesel is just a thin oil with detergents added, I'd probably use petrol in the box if I wanted to get rid of all traces of old oil if I was changing from/to something like Redline which doesn't mix well, just fill it up and lift off the ground and spin the box a few times to dilute what is in there but otherwise I wouldn't bother.

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Beaten up old 98 Gen 2 Liberty, 13.0, stock V3 STI running gear.
07 Transit motor home
69 VF & 70 VG Valiants needing full restoration
Yamaha Zooma 50cc rocket hopefully going with the Transit.

Is Fortron good? I get other stuff off them & the rep comes down next week...might snag some.