wrm

The engine has a burnt oil smell. What can cause that? I can't find any leaks. The truck does not have a cat.

FDC

When was your last oil change? Rosmella?

wrm

burnt smell started right after oil change.but no oil was spilled during change

infidel

Diesel engine oils contain a wax like additive designed to hold other additives in suspension while in storage. First time your engine warms up after changing the oil this additive begins to burn off and may take upwards to 500 miles to finally burn away. Smells exactly like you spilled oil on the exhaust manifold. Some oils are worse than others for the smell with Rotella by far being the worst.

wrm

i did use rotella and the more i drive it the smell seems to get better where does the smell come from is there a crank case breather .thanks for the help.

infidel

Yes, there is a breather that vents to the atmosphere, commonly known as the blowby tube.

Ridiculous

this is exactly what is going on so no need to worry. but i just was wondering if you, infidel, have ever used valvoline's premium blue, i used it a couple of times and whewww weee, IMO this stuff is by far the worst.

XLR8R

You think it's worse than Rotella?

FDC

I used it in my first gen, and can't remember it being worse than Rotella. Keep in mind, this was almost 10 years ago, and before they changed to API-CI.

I like the smell of Rotella in the morning. It smells like...victory.

XLR8R

Next best thing to napalm!