What is the best OIL

[wedget]

I have a 280i with 87k on it, What is the best oil to put in it the underbonnet plate recomends Castrol GTX is this ok, I generally dont drive that fast and dont really like fully synthetic as i think its too thin for older engines, I normally change my oil between 3-6k, and i dont want to fork out for really fancy oil. Any ideas

[350matt]

The GTX will be fine, as long as the viscosity is right 15W-50? or even 15W-40 although this will be a bit thinner at temperature

Matt

[nhyde]

I'm using Valvoline "Racing" 20/50 in the 400 and the SEAC , holds the pressure well and only £17 for a gallon .

[wedget]

i have heard that this racing stuff is far too thin for older engines

[ian8542]

wedget said:

i have heard that this racing stuff is far too thin for older engines

Racing or not on the label.Mineral or synthetic.Look at the viscosity.20W/50 is 20W/50 whether it is mineral or synthetic,one is not thinner than the other.
Synthetic will give better protection under extreme operating conditions.
Any good quality oil 15W/50 or 20W/50 mineral or synthetic is ok.
As Steve Heath would say "one for the oil police".

[nhyde]

With the floppy piston rings on the SEAC the thicker the better. Crude oil would be good

[waynester]

I checked with Peninsular and they use Mobil 1 15w/50, so i have that in my 400.
May need a re-think though as it cost £70 for 8 litres at Hal'sfrauds

[cuneus]

Mobil 1 Motorsport 2x4l 56 quid (delivery free)

from www.teessideautotech.co.uk

(maybe wedg1e can bring a trailer full to BBWF 05 ?)