Gray-blue Smoke ?

[over40driver]

I have put about 2000 miles on my 95 sc400 and have never seen a hint of smoke. I normally drive 7 miles to work and back and am normally a conservitive driver. However I took a 300 mile tpip to visit my dad last weekend and on one staightaway hit 100 mph, then the next day i tached the car to 5700 rpm twice, the next morning when i started it up it puffed gray smoke i hit the gas a couple of times and it still smoked. I drove back home and started it the next morning and you couldnt see any smoke, i am wondering about the cat. converters at 119,700.

[Sin Pena]

I have put about 2000 miles on my 95 sc400 and have never seen a hint of smoke. I normally drive 7 miles to work and back and am normally a conservitive driver. However I took a 300 mile tpip to visit my dad last weekend and on one staightaway hit 100 mph, then the next day i tached the car to 5700 rpm twice, the next morning when i started it up it puffed gray blue smoke i hit the gas a couple of times and it still smoked. I drove back home and started it the next morning and you couldnt see any smoke, i am wondering about the cat. converters at 119,700.

Sometimes when you drive a vehicle hard and shut it off quickly. It doesn't allow all of the fuel to be burned. Just make sure after a hard drive you let the car idle to let the remainder of the fuel burn.

[2JZ_SC]

Blue/Gray smoke is normaly Oil. It could be valve stem seals or you may have pulled a little oil past the rings with a little carbon tha broke off on the hard run. keep checking your oil.

[jzz30]

check fluids, unless smoking presists nothing to be worried about.