Oil Quality

[Sumo]

Hi all, I was talking to a Caltex oil rep at ag quip a couple of days ago, and he said one really good way to see if you oil is in need of changing is to feel it, grab some fresh oil (same as what is running in your car - I suppose only the poeple that service their own cars can do this) rub the oil from your fresh container and feel how "slippery" it feels.... now do the same for your engine - clean you fingers and rub the oil off the dipstick through your fingers and see if that oil is just as slippery... My fully synth oil has done 6000kms and it doesn't feel as near as slippery as the fresh stuff..... Oh well, time for a change.

Sumo

[wrxhoon]

u should change it every 5000 k's ( nissan recomends every 10 or 6 months , dont forget that time detetiorates oil too case of condentation especialy if u park u r car out at night and it gets very cold . if u race the car u should change more often .

[Jetdat]

Originally posted by Sumo

Hi all, I was talking to a Caltex oil rep at ag quip a couple of days ago, and he said one really good way to see if you oil is in need of changing is to feel it, grab some fresh oil (same as what is running in your car - I suppose only the poeple that service their own cars can do this) rub the oil from your fresh container and feel how "slippery" it feels.... now do the same for your engine - clean you fingers and rub the oil off the dipstick through your fingers and see if that oil is just as slippery... My fully synth oil has done 6000kms and it doesn't feel as near as slippery as the fresh stuff..... Oh well, time for a change.

Sumo

i have been doing this for years....

i also look for carbon particles or water presence in the oil....i also smell the oil to see if it has been contaminated by fuel.....

but yeah i change oil and oil filter every 5,000 k's or 3 months which ever comes first.....

[Sumo]

Jetdat: Its pretty hard to tell for fuel with skylines because they run that rich it contaminates the oil pretty quickly

[Jetdat]

Sumo;

turbo's do run very rich and you can always smell the fuel in the oil, but extreme cases the fuel smell is very pungent and points to a problem.

oil in a turbo engine of mine once was so diluted that it was like 2 stroke fuel, i kid you not. I only discovered this when the head gasket blew, cylinders filled with this oil fuel mixture and seized the motor....but it was fun rebuilding that engine....hehehehe

so i guess since then i am a bit paranoid.

[Sumo]

ahhh ok

Fair enough