AJC

iTrader: (6)

hi all, my mate just bought n es cos and wants to do an oil change
could any one pls tell me best oil to use for it?

Its a small turbo model, (not sure if that makes a difference)

thanks troops

M.A.D.RST

Hello mate, i use Castrol RS in mine, its a big turbo but couldnt tell you if theres a difference between big and small.

Damo V

mobil 1 motorsport 15/50

dave green

Castrol RS10/60 in mine

oilcosworth

me to Castrol RS10/60

bigpower

RS10/60 in mine!!!

mk3cosworth

castrol rs 10/60

Dean-o

millers 10/60

red october

tremona garage (specialists) recomends shell wotsit synthetic 15/50 i think it is

DO NOT GO TO FORD & HAVE THEIR OWN POO !

MONSTER

castrol 10/60

Syvers

Agip 10-60 Racing

Rocco

mobil 1 15/50

salmon

How much do you need? doing mine at the weekend.

Cheers

oilman

Just playing "devils advocate" here really.

Why are people using 10w-60?

The recommended oil for the Escort RS Cosworth is 5w-40 or 10w-40.

What this actually means is that this engine is happy on an oil that has a viscosity of 14cst at 100degC which is an sae 40 not an sae 60!

An sae 60 is in fact 24cst at 100degC which is a whopping 70%+ thicker than required. This is not a good thing so let's not be macho about it.

An oil that is too thick will cause additional friction, heat and engine wear added to which it will reduce your fuel consumption and BHP at the wheels!

An oil that is too thick can also cause cavitation in the pump!

Now, ok I accept that in extreme circumstances (Rod Tarrys Cosworth as an example) there may be an argument to use an sae 60 as the mods are extreme to say the least but on most of your cars it's causing more harm than good.

Mods that affect BHP and particularly oil temps may need a step up to an sae 50 (18.5cst at 100degC) but this is only applicable if your oil temps exceed 120 degC!! This will prevent the oil from thinning too much at these extreme temperatures and above.

Don't step up viscosity (oil thickness) unless it's totally necessary, step up the quality! A proper synthetic 5w-40 will handle 120degC an that's a fact.

Just concerned at the inapropriate use of 10w-60

Cheers
Simon

MONSTER

Didn't realise I was being 'macho' matey, just using the oil I had been recommended by a little company i know, woodford garage you may have heard of them?

oilman

Indeed I have and I'd love to know the reasoning behind the 10w-60 recommendation as it's a long way "out of grade".

Sorry the "macho" comment wasn't meant to offend anyone, just my twisted humour I'm afraid

Cheers
Simon

MONSTER

me too mate, what would you recommend then?

no offence taken

cheers

oilman

I would recommend a decent 5w-40 or 10w-40 synthetic.

Silkolene PRO S 5w-40
Motul 8100 5w-40
Motul 300V 5w-40 or 10w-40
Fuchs Titan Supersyn SL 5w-40

These are all proper synthetic oils, no petroleum basestocks.

Email me for a price list, you'll be pleasantly surprised!

sales@opieoils.co.uk

Cheers
Simon

Franco

iTrader: (2)

Simon,

Quick question........Why did you recommend to me using Pro S 10w - 50???

Sorry alittle confused when you quote 5w-40 or 10w-40.

Thanks

Jason

Speedy G.

iTrader: (1)

Would like to know that aswell.

Richie Russ

I use shell helix super dooper plus 10w 40

Franco

iTrader: (2)

BTT For the oilman Simon!

oilman

If the car is modded or used on track we tend to recommend the PRO S 10w-50 instead of the 5w-40 as it will take higher heat than the 5w-40.

At the end of the day, both are interchangeable as they are both good on cold start and extremely thermally stable due to the ester/pao basestocks used.

Your engine would be happy on either and it's down to personal choice.

Cheers
Simon

scruffythefirst

Why do you reccomend running a cossie in on 15w - 50 when a 5w - 40 or 10w - 50 is reccomended for normal use?

Franco

iTrader: (2)

You need a thicker oil for running in to collect all the crap/debris which new bulid engines collects on the way like swaf etc etc(best using the cheapest thickest crap known to man!)
then after the 500 or so miles running in you'll change over to the good stuff!

oilman

Thick mineral oils are best for running in as it aids the bedding in process.

It's also only for a short period.

Cheers
Simon

adamski frst

nice thread made me work out wot to put in mine

Chris Reade

I use Shell Helix in mine

vinnya77

iTrader: (1)

Mobile 1 15/50, always have, always will.

Holty

Its castrol RS 10/60 in mine, used the mobil 1 motorsport 15/50 and after one track session it was really thin and standard oil pressure gauge was sitting just on the red at idle.

cozzed

castrol 10/60 in mine. it did not like mobile 1 motor sport at all
respect to oilman

oilman

If you are using 10w-60 then I would highly recommend that you try Silkolene PRO S 10w-50 next time around.

This oil has been tried by many tuners here with noticeable positive results.

You've nothing to lose by switching from a petroleum based oil to a proper synthetic but plenty to gain if the car is modded or used on track

Cheers
Simon

maxest

iTrader: (1)

I went from castrol RS to silkolene pro s 10w-50, wouldnt go back to castrol!

And neither will Bigpower (above), when ive put silkolene in his!