So. I decided to change my oil and filter yesterday on my 1996 sc300. Correct filter, 5w30 synthetic oil.
My engine has 135,000 miles on it. 1 owner car, EASY miles. Strong, clean engine. Perfect maintenance and repair records.
I finished the oil change, backed out of my garage, and let it idle in my driveway for?10 minutes.
After cleaning up, I got in, and drove toward town to go to the store. About 3 miles....ish away from home, I stepped down lightly on the accelerater, and it instantly started blowing oil. A LOT OF OIL. I shut it down.
After trailering it home and talking to my local Toyota guru, I drained and changed the oil again to 10w 30 conventional oil.
I started it. Within 1 minute, I had half a quart of fresh oil on my garage floor. It was being pumped through the pcv valve and draining out from my cold-air.
So. I shut it off. And here we are I am not a Lexus Tech. I am not even a mechanic. I am also not by any measure dumb, incapable, or uneducated.
I have not only never heard of or seen anything like this in my 54 years, I cannot find a single post on any forum that is similar to what is going on here, or how to fix it, because I have nothing and nowhere to start.
That's all the relevant information on the event. I have not ommited any detail that I am aware of.
Mostly stock engine. New: cold-air intake, adjustable cam gears, timing belt, water pump, harmonic balancer, idler pulley, and tensioner, sepentine belt, radiator and hoses,thermostat, cooling line hoses, plugs, wires,cap, rotor, coil.
If anyone has any advice, information, or even wild ideas? I am willing to do or try whatever it takes to rescue this engine.
I have been caring for this car since it rolled off the lot in September of 1996.
I can afford a new engine. I can afford a new Lexus. I don't want to replace the engine, anymore than I want a new car.
I can forward any pictures, information, whatever it takes.

 

I know nothing about engines, but I know how to edit your title to help get the right folks in. I'd suggest posting it in the SC forum as well.

 

Lol! Thanks. I am not exactly firing on all cylinders myself. Been up all night pestering google for answers. Ya. Might as well be looking for a needle in a stack of needles!

 

All good Hope it works out!

 

Did you use a Fram oil filter? They are notorious for poor quality and leaks.

 

These are from moving it 25 feet today.
Mobile 1 filter

 

Try removing the new oil filter and check to be certain that the old filter gasket is not still stuck to the mounting surface. This is a common reason for a leaking oil filter. I have had this happen. Check the filter that you removed, is there a rubber ring on the mounting surface?

 

When you shake your PCV valve, do you hear it opening and closing? It could be stuck open.

 

I hate to say this, but you may just need to fill it with oil, clean it, and start it while someone watches to figure out where the hell it's all coming from.

 

Not a mechanic so this is just pure throwing stuff out there to see what it sticks and DONT TAKE THIS SERIOUSLY without proper consult

1) Overfilled?
2) Saw this on ETCG1 but ever do a compression test on the motor? Any issues there

 

Just to note, that PCV does not look like the correct stock PCV, it looks like just a generic elbow with nothing inside of it.
You may want to start with the correct part (the stock PCV is purple), just having an elbow on there is going to suck oil out of the motor and into the intake.
The PCV limits the amount of intake vacuum that can be applied to the crank case (to remove vapors and not suck up bunches of oil), so you either have to keep a real actually working PCV when connected to the intake, or you need to vent the valve cover to air (on custom setups do not do this on your stock engine)... but connecting the valve cover to the intake without a PCV is 100% wrong.

Mrmj2u above was correct, you need to verify that your pcv is working and not stuck open, but I can clearly see that is not even a PCV valve it is simply an open elbow, which is actually worse than a stuck open PCV valve.

If for some reason its not that thing that kind of looks like a PCV but really isn't, then I would start checking other stuff.
How long ago did you do all that new stuff, like the harmonic balancer and the cam gears. usually these motors will push oil out if there is excessive crank case pressure.
Short of frying some piston rings, it could be due to incorrect timing or something loose.
I would check to make sure the crank bolt on the harmonic balancer did not loosen itself up which they tend to do if you don't get a huge amount of torque on them.
Second I would check that the cam gear adjustments have not moved. Third, I would check that all the cam and crank timing marks line up still.

When you remove the pcv looking but not really thing does it spit out oil everywhere? If you remove the oil filler cap does it spit out oil everywhere?
If so then you need to figure out why the crank case is pressurizing, and if its nothing obvious you could have worn the rings or cylinder walls and a compression/leakdown test would be the next thing to confirm.
If it doesn't then the engine is fine and you just need to install the correct PCV, and fill it with the right amount of oil again of course.

Also I would confirm it is oil and not power steering fluid, on these cars when the power steering idle up vaccum switch thing fails.. it sucks power steering fluid into the intake and causes a mess, but not usually that much.