Nickodm85

Gunna do my timing belt, water pump, spark plugs and oil service in a couple of weeks.
Just wondered if anyone ever uses an oil flush treatment?
I heard that flushing out can some times be bad for the engine, due to potential cracked rings in the engine that are being protected by the old aged oil residues. Any thoughts?
Mines a type r V4 with 95,000 kilometres on it.

Davey96wrx

iTrader: (1)

Ive never been to sure about them really, I think shorter intervals in between oil changes would be of more benefit tbh I do them a 3k religiously

scooby1929

iTrader: (1)

Deffo big no no on a subaru engine.

360ste

iTrader: (1)

Since owning my Scooby STi bugeye, I have done a oil flush every second oil filter change. Drained the old oil, refilled then allowed to idle for 10 minutes. Drain, replace filter and fill up. The car is now on 105k miles the engine has never been rebuilt, just bolt on mods to give it 440 bhp.

scooby1929

iTrader: (1)

I would be very surprised if you would get any engine builders on here recommending the use of engine flush

Nickodm85

cheers lads,
All comments have been taken on board.
Think I will steer clear of the flush.
Car runs sweet as a nut. Pretty much standard apart from my afterburner.

360ste

iTrader: (1)

You might not. I started doing mine before I read about these procedures for doing oil changes. I could be just lucky but as I have worked on engines must bigger than a flat four and the only thing done similar is the pre-filling of the filter.

scooby1929

iTrader: (1)

Why anyone would want to run their engine on a cheap oil-paraffin mixture is beyond me. if it was me i would just put a good quality fully synthetic oil in like millers or silkolene

scooby1929

iTrader: (1)

Yes but the subaru boxer engine is different and needs careful maintenance. dont want to get off track but when changing oil you should also disconnect the crank position sensor
When you fill with the new oil you should turn over the engine a couple of times before you reconnect it

360ste

iTrader: (1)

Where have I said I used a "FLUSH OIL"?? I said I did a "oil flush", somewhat different. Flushing oils are too thin when hot. I used a semi synthetic oil prior to filling with a synthetic oil. I said since owning my Scooby which I bought new in Cyprus is 2002 so once back in the UK had no warranty so all repairs and servicings (apart from cambelt) I do myself.

scooby1929

iTrader: (1)

I was not saying you it was a general comment about oil flush as per post 1

Imo using a low grade semi is a complete waste of time.

If you bought a car new in cyprus why would you have no warranty? u have a 3 year subaru warranty. all u do is contact subaru uk and give them your chassis number

Flyinspanner

Maybe his warranty expired whilst still in Cyprus....its now ten years later..

360ste

iTrader: (1)

Did not work like that in 2004. Also had started the modding due knowing I would not have a warranty when I came back.