kidsRS

iTrader: (6)

What is the best oil to use in my engine and gearbox in my cosworth? and where is the best place to buy from as in best price?

KSA-Cossie

iTrader: (4)

Silkolene pro-s 10/50 from opie oils.

boothy

iTrader: (14)

As said before mate aldis finest cooking oil to run her in thats what i used and did not miss a beat,everyone said i was mad to use that on my yb but did the trick

LHD220Turbo

iTrader: (4)

silkolene for me to

if 2wd, then atf dexron 2 for the gearbox, or 75/90 full syn gear oil

kidsRS

iTrader: (6)

CheeRS how much oil does engine and gearbox hold so i know how much to buy?

LHD220Turbo

iTrader: (4)

2.6l for the gearbox assuming t5

i would just buy 15-20l of engine oil, saves having to keep buying it, he'll probably do you a good deal too if ordering a decent quantity

kidsRS

iTrader: (6)

cool nice 1 what is best? atf of the full synth gear oil!

cossiejsy

I use castrol 10/60 rs oil and ATM oil in the gearbox

JamesH

iTrader: (21)

I use Mobil 1 Motorsport 15/50 in the engine

kosman

this is what i use,you just missed a offer opie oils had on kid,pm oilman off here,he'll give you a price and you get discount cos you from here

kidsRS

iTrader: (6)

Yeh iv just become a member of the opie site me man so yeh ya get a discount! Its getting close now az!

SS1

iTrader: (3)

http://www.opieoils.co.uk/p-60117-si...ial-offer.aspx

kosman

sweet man,ill try and slip up at weekend and have a gander

PeterRST

iTrader: (1)

I think it depends entirely on how you use the car.

Racing spec 15W50 for instance might be a great idea in a summer or track day car but unsuitable for an everyday car used in winter.

martysmartie

iTrader: (1)

As said, I use ATF for box as thats what they had when they were new! I woulden't go any lower than 10/60 for engine. I normally use 15/50

Martin

PeterRST

iTrader: (1)

Explain!

BigErn

Mine gets any 10-40 semi synth thats lying about

Pri007

millers 15/60

PeterRST

iTrader: (1)

You're probably not being serious but I think you wouldn't go wrong with that either. I do the same with my RST, only the Cossie gets extra treatment.

Most modern oils will be better than what was available when the Cossie was new.

The Ford manual for example requires oil conforming to the "API-SG" standard. Today you will have trouble finding anything worse than API-SJ which is already 2 classes better than SG.

Initially the oil viscosity spec for the Cossie was 5W50, but was later changed to 5W40. Probably because they found out the extra reserve at the top end of the temperature scale wasn't needed. And because it was cheaper to stock as it was also used in other Ford cars while 5W50 was an exotic cossie only thing.

I really don't like the idea of using 15Wxx or 20Wxx oil though as that is a seriously thick soup when cold. Especially at the current temperatures. Fine for a track car but dreadful in a road car fired up at -20 degrees...

BigErn

No mate, I am being serious. All my previous Cossies have had the same and get abused every time they have been used. They always burn it off quick as fook so dont bother with expensive oil

PeterRST

iTrader: (1)

Well as I said, I think it will be fine and - if you actually do a lot of short runs with our current temperatures - still better than the most expensive 15W or 20W stuff...

rich123

iTrader: (3)

castrol edge 10/60