mgg

Got my first scooby on saturday just gone, what a car!!

Its a MY02 WRX with 12500 miles on the clock, its had 2 previous services and i plan to get it serviced after xmas.

However, prior to this i would like to change the oil and oil filter myself.

What oil / oil filter do you recommend i use ?

Thanks in Advance

Marc.

MAFFA

As it's getting colder now you could go with a 10-40 but I tend to use a 10-50 fully synthetic.

The oil of choice at the moment is the Motul 300v. You can get it from places like Scoobymania but I believe there was a group buy going a little while back. Do a search in that section of SN

MAFFA

MAFFA

Forgot to mention. Don't use a 0 or 5 rated oil as that will be too thin.

MAFFA

oilman

iTrader: (9)

Use either Silkolene or Motul and try to get on a group buy, it's cheaper this way.

There's one just closed but you can always PM me.

Cheers
Simon

AndyMoody

iTrader: (2)

Castrol RS 10-60 from www.castrolclassicoils.co.uk

Andy.

oilman

iTrader: (9)

But...........

It's not a proper synthetic, it's a "hydrocracked" mineral oil.

Cheers
Simon

knap

Simon

Are you certain as if made in Germany must be a true synthetic, although judging by price in UK I think you are right, and I assume the UK laws are not same as German although not sure why as part of EU.

What is fairly certain is that German Castrol Synthetic appears to be a top notch oil.

Cheryl

Redline Engine Oil is very good

cefski

Is Mobil1 15-50 out of fashion, then? Been using it for nearly a year with zero problems.

Kev

cefski

mgg - almost forgot, there's a much talked about 'safe oil change procedure' for the Impreza's boxer engine that you need to know about. Do a search, as I can't be arsed at the mo

kev

Adam M

motul have a revised formula now which is supposed to give 4% mroe horsepower.

I just bought 16 litres for just over £100 delivered. I went with 15w50 as my car is garaged and is never truly left in the cold, plus I have a primer system.

Without the primer system I would definitely use the preferred oil change procedure just as a safety net.

ALi-B

iTrader: (1)

I hate to be picky. But please, before giving advice on viscosity can people read up on how the viscosity rating and indexing system actually works - there is plenty of stuff on the net.

You will find those first numbers 0w,5w, 10w or 15w are the winter ratings (basically viscosity of the equivelent monograde oil when below a set temperature (usually less than -15degrees) ). These are important for cold start conditions.

For example:

In most cases, there is little difference in hot temperature viscosity between a 0w-40, 5w-40 or 15w-40. the latter maybe be "slightly" thicker at high temperature, but the difference is usually 1 or 2 centistokes. You can get the same difference in hot temp viscosity between different oil brands of the same viscosity ratings.

There are a few complications to confuse things, mainly being how the oil degrades in performance over time and use. Which is why the use of a "true" synthetic oil is recommended over a "virtually" synthetic and that is prefered to a semi synthetic. Generally, synthetics of the same viscosity rating are "slightly" thinner when hot than a comparable semi synth. But it's ability to withstand degradation through use, (in theory anyway) means it will retain its viscosity whilst semi synth of the same age and useage conditions will be thinner. So in the long run a 0w-40 esther based full synthetic will probably maintain its "40" weight rating when hot whilst a 10w-40 or 15w-40 semi synth may actually be thinner, due to degradation and contamination.

I hope that makes sense

D1CCY

Well said ALi-B. I've used Mobil 1 0w-40 for a decade and in previous WRX and current STi8 PPP with no probs. Recently switched to Silko Pro-S 5W-40 due to persuasion by OILMAN. I wouldn't think of going any "thicker". Even the 5W makes the car seem slightly more sluggish when cold (OK when hot). I'm very concerned about cold circulation and hot running heat transfer.

Cheers, Diccy.

pmarch

Same here - I bought some last month in readiness for my forthcoming service by main dealer who also said, "we used to use this one".

oilman

iTrader: (9)

I have recently consulted three different sources on the correct viscosity for all post 2000 scoobs and will post the findings here when I have a minute to read it all.

They were:

Silkolene
Motul
OATS (A proprietory database used by most oil companies)

Will probably start a new thread for this though.

Cheers
Simon