Gas in oil?

[nolidnoworries]

My dd 2000 nissan frontier 170k has a nice gassy aroma in the engine oil... Any ideas? SES light has been on a while so i had it checked and the code was for the egr valve but i didnt know if this would cause the gas in oil. changed the oil, bought an egr valve but havent put it on yet cuz the whole truck would fit under the hood of my k5

 

[TerryD]

With the CEL (check engine light) on, the computer goes into "limp" mode which is a safe mode for the engine. It's designed to get you to a shop to get it fixed, not drive indefinitely. It's probable that they designed it to run slightly rich in case it was a fuel delivery or O2 (fuel mixture) problem to keep the engine safe.

Get the EGR valve on it and get the codes cleared and you should be ok.

 

[LeasingBb]

I had a dodge that had gassy oil. I let the truck sit for a while and ended up with like 7500 miles on regular oil between changes. It smelled like gas when it was changed, also the truck had bad valve seals and eventually bad rings. the truck had about 50k road miles and 40k offroad/hunting miles.
I had to change it like 6 times to rid the new oil of the smell. I used a lot of lucas oil to get it back right.

 

[TerryD]

Be careful how much Lucas oil you use in the engine. That stuff creates drag and causes the oil to return to the crank case slower. On a stock small block turning no more than 4500RPMs, you'd probably be ok. On engines that turn higher RPM's or that have a HV oil pump, it could cause oil starvation and actually overheat the oil and cause it to stop lubricating faster.

You've seen the little displays Lucas puts out that you crank and you can watch the oil "climb" the gears? Look carefully, there is oil all the way to the top of the "regular oil" side, and the sump is full. The Lucas clings and gets very thick at the top and almost empties the sump.

The problem is that the oil in the sump is for cooling. The "regular oil" side has oil all the way to the top, in a film, working like it is designed to and draining back to cool. The Lucas just sits on the gears, creates the little webs between gears (pre-windage and drag) and has very little oil left in the bottom that is allowed to cool.

 

[nolidnoworries]

been workin on getting the egr valve off....what a pita! might as well go ahead and rebuild the engine since i pretty much had to remove it to get to the dang thing. another quick question, since i already have it torn down, are there any other components of the egr system that i should go ahead and replace? theres some kind of black plastic flux capacitor thing mounted right above the valve that has a hose to it. i know its not a gm but thanks for the help anyway!