Dirty Sanchez

I have an o6 STi and i heard that your not supposed to use synthetic till 36k miles because of break-in... when did it take 36,000 miles for break-in process??? Did i miss something here?

wimprezax06

iTrader: (17)

around 10k is good enough, but its better to 2 times, when u let all ur old oil out n put synthetic in, then run it for 5 mins, then let it all out again, n put new oil in. its more work, but worth it

silver_wrx

so, what happens if you don't use the synthetic oil? or not all the time. I mean, they're pretty darn expensive when do it at the dealer...

subie OCD

iTrader: (11)

If you want to switch to synthetic, do it whenever you feel like it. Everyone will tell you something different. The consensus is 10-20K miles. If you really want to know how the motor is responding to oil, send a sample of your used oil to a lab for an oil analysis. BTW I switched to redline synthetic after break in (3K or 3750) on my 02 wrx.

nachomc

iTrader: (7)

I switched over to Mobil at 10k.

wimpreza: if you want to save some money, find a local mechanic you trust and supply your own oil/filter. You can get a 5qt bottle of Mobil 1 synth from Wal-Mart for ~$21 and the filter from Subaru is only $9 or so.