mobil 0W-40 SLK230 Supercharged over 3 years

[slalom44]

Originally Posted By: slalom44
Nice UOA. It's amazing that your iron was so low, considering that Iron often tracks with time. Did you use some sort of oil magnet?

It would have been nice to see a UOA on this oil. You could have determined how far you actually pushed this OCI.

Oops.... I meant to say "It would have been nice to see a TBN on this oil....."

 

[chicagophil]

Originally Posted By: Pablo
Originally Posted By: Stevie


So do you think that the recommended time change interval by the oil makers is to sell more oil?




Yes and no. Probably hope they will sell more oil - but also more likely butt coverage given the variables in just how often people will do short trips - never actually getting the oil warm....I can easily imagine someone doing this 200+ times per year and yet only having 2000 miles on the oil.


This is an interesting thread for me, as while I don't get to start my car 200+ times a year, short trips make up a good chunk of my driving (Honda S2000), and total miles are less than 2000 miles a year. Despite my car having an OLM, the manual still calls for changing once a year in the event the monitor fails to reach 0% (and mine hasn't come close).

I've tended to view the annual cost of an oil change to be a reasonable price to pay for piece of mind, but it seems that I could probably get away with a longer change interval. Though, until my powertrain warranty is up, I should probably stick to the manual's recommendation, no?

 

[901Memphis]

If your going to run the oil that long you probably want to spring for a TBN result to see how accurate your oil life gauge is.