Is it alright to use 5w50 oil in a stage 3 cossie ?

Been told off some people use 10w60 who have been told off NMS to use, who said that 5w30 is the quickest way to blow a cossie, and today been told that 5w50 is a good oil to use and is used by Harvey Gibbs in his big spec engines, which to me aint much more than 5w30.

Dont know what to use for the best when different people are coming up with different recomendations.

 

Better off with silkolene pro s 10/50

 

use mobile1 15/50 in mine

 

5w50 is also what ford recommend in the owners handbook aswell

 

i would buy the silkolene oil mate. Ive used it twice now. My car will need a service soon and i will be buying more of this. I think the castrol oil used to be 10/60 which is good oil

 

There is also millers oil which is good oil too.

 

yes on a standard engine, i use 15/50 mobil 1, might try castrol 10/60 next.

 

if you look in the performance ford mags they reckonmend using millers xfs5w50

 

I used the old castrol rs oil 10W60, sounded like a bag of bolts as it thinned out, silk 10w50 much better, wouldn't myself use anything less than a 50 weight, would use a 40weight if I fitted a air to oil cooler though.
tabetha

 

I put 10w60 in it and top end was rattly so dropped down to 10w40 and it aint done anything. Think i might have to invest in some pro s 10w50

 

pro s is the way forward, especially if you drive hard,

its breakdown point is 30-40 degs higher than mobil or castrol

 

karl pm big davie in our group hes got this new oil and adative hes been using and loads of well known engine builders recommend .

could,nt tell u what it is but i,ll find out for u if u want or just pm him on the site

cheers gibby .

 

Best oil I ever used is SUNOCO RACING 20W50, pricey and hard to get(here)
tabetha

 

Mobil 1 15w/50 available from Halfords and is on offer at moment or Silkolene Pro S 15w/50 which is also on offer (i think) threw Oilman (opie oils)

 

Are your tappets nackered mate.The silkolene is good oil.The colour of it is red.Like i said i will be buying some more when i come to service my car at the end of the month.

 

Mobil 1 15/50