Oil degradation

[Roy]

Ok so typically 5,000kms for a change in oil and filter is a good idea.

But if the engine has been run under high load and at highish temps for 600kms, would you expect the oil to still be abel to prtect the engine if you were looking to go do a few qtr mile passes?

The K&N Oil Filter, Castrol Formula R 10-60 oil has done about 10 laps around Phillip Island, and about 20 laps of drifitng around Calder...all within the last 2-3 weeks. Thing is i wont have time tonight/tomorrow to dump the oil, as normally i would.

So have i always been mega cautious by changing the fluid prior to any event....surely an oil like Formula R isnt past its best after only 600kms and a few weeks of hard use?????

Thanks

[predator]

on a sidenote, are there any signs other than the darkening of the oil to show that it has been breaking down and becoming less effective?

[Roy]

Dipstick looks ok, but is colour really a good indication?

[dangerous_daveo]

Dipstick looks ok, but is colour really a good indication?

Not from what I've been told. Its more so its structure becomes stuffed over time/use/heat etc.

[Ronin 09]

I take it then Roy that you never got the last sump full analysed?

[Roy]

Its the same sump full of oil from PI, i havent had a moment to dump it and put some fresh stuff in there:(

Doing a big handover of a project tomorrow, so should be easy street for the next few weeks...though i just farked my back at indoor socker, so who knows if i can make it to Calder:(