Dumb, Dumb, Dumb. - PeachParts Mercedes-Benz Forum

300DPETE · #1 10-24-2005, 07:03 PM

So I changed my oil in my 1982 300D the other day along with the fuel filter.

When starting up the car, it was stalling out a bit, probably due to a bit of air in the lines so I reved it a bit to clear the air...forgetting that I had just drained the oil and put new oil in.

Normally, I'd never rev the engine right after draining and filling the oil, in order to let the car gradually circulate the new oil..., but I managed to have a brain fart.

Well, I smelled burning oil for a couple of seconds and then all was fine, and it doesn't run any different. So, my question is what kind of damage could I have done, and is this something I can inspect when I adjust the valves (it will be my first time doing this), and what should I look for?

Am I just being overly concerned?

Brian Carlton · #2 10-24-2005, 07:16 PM

The oil pressure will come up within five seconds.

If you waited for five seconds, you are fine.

If you revved it before five seconds then the engine had to operate without oil pressure for a couple of seconds. It's able to do this and you did not cause any damage.

I trust that you didn't rev it to 3K rpm's in less than 5 seconds.

300DPETE · #3 10-24-2005, 07:26 PM

I just reved it for a couple of seconds. It probably went to 3k, and I'm pretty sure I reved it within 5 seconds...that's when I noticed the brief burnt oil smell

Hopefully I've just learned a lesson and not taken off a few years of engine life.

t walgamuth · #4 10-24-2005, 09:38 PM

smell was probably minor spillage on the exhaust.

i wouldn't worry if the oil pressure is ok.

tom w

300DPETE · #5 10-24-2005, 09:54 PM

Quote:

Originally Posted by t walgamuth

smell was probably minor spillage on the exhaust.

i wouldn't worry if the oil pressure is ok.

tom w

Ahhh. I was so nervous about it that I forgot about the old "oil on the exhaust." That must have been it.

BluEyes · #6 10-25-2005, 12:52 AM

I once drained the oil in my Chrysler late on sunday. Went inside and had dinner, intending to finish up the oil change afterwards.
Well, I forgot, and went out to go to work monday morning just like normal. Started and backed out before I looked down to see a bright red "check gages" light on the dash! I remembered the oil right away.
Engine ran probably 10-15 sec with NO oil whatsoever, and I was running plain oil at the time, not synthetic.

That was over 60K miles ago.

Granted, it is a gas engine, but it's still running fine.

Don't sweat it. You *might* have caused some *miniscule* bit of bearing wear, but nothing more than a cold start or two.

pawoSD · #7 05-12-2009, 10:18 AM

I used to fill through the filter housing, but now I don't bother since it all just drains to the pan anyways. I usually get full pressure in about 5-6 seconds upon starting after an oil change. And in like 1 second normally. The gasser is slower to build pressure on startup....it takes about 2-3 seconds to reach 3 bar....