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Discussion Starter #1
I know this question has been asked several times and I am fairly comfortable that the oil smell (with no apparent leaks) is not an issue.

However, my question is why did it start when it did?

I bought the truck with 47K. It now has 110K. I didn't notice the oil smell till right around 100K. I have had my oil changes done at the same place since I bought it.
Any thought that going a little longer between oil changes might be a contributor? instead of 4k to 5k between changes may be closer to 6K.

thanks
 

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check the blow by vent tube.... i got the same problem.
 

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You need to check the filter that is on top of the Eng crankcase vent filter There is one for the 03-07 and 07.5-09 You will need the 2005 === Good Luck ===
 

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whatever came of this:confused013: i had my truck at the dealer for alignment and bc they didnt understand the way i wrote something on my service slip they thought i wanted an oil change and did it w/o asking me its been about two weeks and the oil smell that only lasts a day or two after a change when i do it is still there. very light amount of haze coming out of the oil fill hole and if i put my hand over the end of the crankcase breather tube i cant feel the air till i plug it up for 2 secs then i get a little puff. normal? they told me they used 15w 40 but i never asked if it was synthetic or not
 

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some oils have a type of polymer viscosity improver that produces odors objectionable to some people.
some of the polymer types used: Polymers and copolymers of olefins, methacrylates, dienes or alkylated styrenes

Rotella is one of the oils on the stinky list. has your shop changed the brand of diesel oil they use. the oil manufacturer may have also changed their brew using one of the stinky polymers, alkylated styrenes.

hot temps will cause some of the polymer types used to break down and stink
 

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You need to check the filter that is on top of the Eng crankcase vent filter There is one for the 03-07 and 07.5-09 You will need the 2005 === Good Luck ===
Could you be more specific?

You need to "check" the filter that is "on top" of a filter :confused013:
 

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some oils have a type of polymer viscosity improver that produces odors objectionable to some people.
some of the polymer types used: Polymers and copolymers of olefins, methacrylates, dienes or alkylated styrenes

Rotella is one of the oils on the stinky list. has your shop changed the brand of diesel oil they use. the oil manufacturer may have also changed their brew using one of the stinky polymers, alkylated styrenes.

hot temps will cause some of the polymer types used to break down and stink
i used rotella for a while with no smelling issues and recently switched to valvoline i alwasy do my own oil changes the dealer just misunderstood what i wrote this time and changed it even though it wasnt in the shop for that reason i forget the brand name the said they put in it but maybe its just on the smell list haha? im just a little paranoid bc the oil smell has never lasted more than a few days after an oil change.

steelhead, i think uve posted on this before but i couldnt find it, how much air coming out of the crank case breather is normal??
 

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Could you be more specific?

You need to "check" the filter that is "on top" of a filter :confused013:
the crankcase breather tube that comes out below ur truck is hooked to a filter under the valve cover. take ur valve cover off and ul see what hes referring to right on the very top of the engine.
 
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