which oil?

[Andy]

Midway through rebuilding my autograss novas 1.6 8v engine and im wondering what oil would be best to use?
Last season i used castrol gtx 10/40,this season iv used comma classic mineral 20/50
Engine is a high comp (big head skim) e16se which is always revving its knackers off in 2nd for 5laps
Theres an old saying...oil is cheaper than a rebuild.This isnt wrong.
cheers

[therealnovaboy]

castrol gtx 10/40 you wont have a problem. If you do its not the oils fault.

[Andy]

Some lads there say its too thin and theyve had lifters jack cos of it? They use that 20/50 stuff so i tried it too.

[therealnovaboy]

Some lads there say its too thin and theyve had lifters jack cos of it? They use that 20/50 stuff so i tried it too.

that's probably more likely been due to revving too hard, oil too hot or oil too old.

[Andy]

Thanks bud

[Novasport]

I use a Gulf competition 10w-40 I get from Opie or Demon Tweeks. Engine runs lovely on it and oil pressure is always good and I drive it hard. It was highly recommended by Opie. I bought it from Tweeks off Ebay last time as it was cheaper.

Castrol GTX is crap imo. We have a lubricant testing facility local and the Castrol oils usually tend to come off worse on testing.

[Andy]

Thanks for that info i shall have a search for that stuff

[Novasport]

Opie have it on offer now on Ebay, see item number 181244262185.
They also do 10w-60 and 15w-50.

[RallyMarshal]

My 1400 8v rally engine uses Millers CSS 20-60 semi synthetic.

Not cheap but has been very good at protecting the engine and is changed every 100 or so competition miles to keep it at its best

Paul..

[mowgli]

gm's own 15w50 isn't bad.

[garyc]

valvoline racing 20./50 u wont have lifter issues with this

[Andy]

Thanks gary i was hoping youd reply