Hello everyone. Ive been a member of this board for quite some time even though I dont post much. Recently a situation concerning my car has arisen and I need some serious questions answered.
I own a 2002 Subaru WRX sedan. I am the original owner. The car was purchased in late 2002 as a salvage rebuild. It had 800 miles on it at the time. Other than some transmission problems, I have never had a major problem with the car. I do drive it hard, but I take good care of it. The belts and fluids are changed on time and only with the highest quality replacements. I use nothing less than 91 octane in it every fill. It has never been modded, other than a boost gauge, an intercooler sprayer, and the 3/16th mod, all done by me. It currently has approximately 55,000 miles on it. For awhile now (at least months if not years), I have noticed that the level of oil in the car slowly but steadily decreases between fills. 5 quarts go in, 4 come out. When I check my dipstick 2000 miles after an oil change, it says its very low, but my idiot light never comes on and there is always at least 4 quarts in the crankcase when I do the next oil change. I know the car actually takes 4.7 quarts, but it never really concerned me. I thought possibly there was an issue with the turbo burning some oil, as there is oil residue around it. I was going to take the car in soon to get it looked at, but something new has come up to change the situation for me.
A friend of mine was following me today, and when we got to our destination, she said when I gunned it, she could clearly see BLUE SMOKE come out of the exhaust. Needless to say this horrified me, because I know blue smoke is basically a death sentence for an engine. So I had her turn the car on and rev it hard in neutral for me to see. Sure enough, right around 6 grand or so, a slight wisp of smoke came out of my muffler. Now, this was at a very high RPM, but still it did smoke. This would probably explain why Ive been noticing my oil level slowly decrease between fills.
Now Im not an expert mechanic, but I do know what blue smoke means. I have a few questions about what I can/should do:
1) Does it have to be the engine burning oil, or could this be something else? (IE, the turbo)
2) If it is the engine burning oil, what are my options? Is it even worth it to repair the engine or should I start looking for a swap?
3) How did this happen? I do drive hard but I take care of my car and have no engine mods on it.
Any other comments/questions/suggestions are welcome. Im just pretty upset right now about this. I love my car...... I dont wanna lose it. Thank you.