-
Welcome to the new B.I.R.D. Forum. Please be sure to read the "New Member / New Registered ? Please Read" thread in the Coffee Shop. This contains some important information. To become a full member ( £5.90 a year ) simply click on your user name near the top on the right I hope you enjoy the new site ................ Jaws ( John )
Why does oil turn black?
- Thread starter Fat Bert
- Start date
Hornblower
Registered Users
'kin hell Bert I thought you knew!
Its so that when you take it out of your bike you can tell the difference between used and new and not end up putting it back in by mistake. :wank: :wank:
Its so that when you take it out of your bike you can tell the difference between used and new and not end up putting it back in by mistake. :wank: :wank:
T
t.mac
Guest
can i also add (hijack) does oil viscosity go up or down when used?
does it go thicker , with added deposits, or thinner as the oil has broken down?
does it go thicker , with added deposits, or thinner as the oil has broken down?
AH yes , but you see I must respect the client and cannot really make comment.. of course, as the story is a bloody good one, and as there is a fair old amount of new members out there who aint heard it, I reckon you should retell... Afterall, it IS the stuff of (urban ) legends !
B
bitontheside
Guest
Jaws said:
Tell, tell!
T
t.mac
Guest
go on! i dont mind if is a p!55take at my expense............. b0x2
C
Centennial Man
Guest
Carbon deposits are one thing, but the main contributor irrespective of the health of an engine, come from the bits that slide against one another (e.g. bearings) What happens is that these components rub off microscopic particles of metal from each other. This collects in the oil, causing it to go black. These particles are also the product of steady wear. If you're oil stays golden coloured after a service then I'd worry as it means that things like bearings, piston bores, cams etc aren't getting any lubrication.....
X
XXscraper
Guest
Oil
Oil also goes black through oxidation ? when oxygen in the air reacts with the oil to produce the sticky black carbon sludge particles that coat engine parts. This is known as oxidation and the rate at which it takes place depends on the engine running temperature. The hotter the engine runs, the faster the degradation rate.
Your oil also becomes contaminated with by-products of incomplete fuel combustion that enter your engine because of piston blow-by. This blow-by gas contains fuel, sulphur, nitrogen, oxygen and carbon based particles, which can mix with the oil and form acids. If your bike is left in storage these acids can damage key areas of your engine and gearbox.
You need to change your oil at regular intervals, even if you only do low mileage each year. Do mine every 2k ish
Oil also goes black through oxidation ? when oxygen in the air reacts with the oil to produce the sticky black carbon sludge particles that coat engine parts. This is known as oxidation and the rate at which it takes place depends on the engine running temperature. The hotter the engine runs, the faster the degradation rate.
Your oil also becomes contaminated with by-products of incomplete fuel combustion that enter your engine because of piston blow-by. This blow-by gas contains fuel, sulphur, nitrogen, oxygen and carbon based particles, which can mix with the oil and form acids. If your bike is left in storage these acids can damage key areas of your engine and gearbox.
You need to change your oil at regular intervals, even if you only do low mileage each year. Do mine every 2k ish
R
R2B2
Guest
Yes, come on....!!
Gerron wiv it!!
Gerron wiv it!!
M
mikew
Guest
Punchy said:
and wot colour is EP90 then? sp1ttt3
Fat Bert said:
It's known as the reverse Michael Jackson syndrome.