Truck sat for 4 days. Checked oil and saw I needed to add a bit. Oil on the dipstick looked normal (little dark maybe...) Cap was stuck so the whole filler neck came unscrewed. No big deal right? Anyway once it's off I notice some light-colored stuff on the inside. Is this a sign of a HG or block crack?

I'm not overheating at all but I do have persistent gurgling in the coolant system even after multiple bleeds.

 

 

Sick, thank you. Vehicle has my paranoid. I just replaced the TBH and both hoses and I'm still smelling a bit of coolant after a drive and seeing it drop. Pressure tests held fine for 30 minutes per the last shop I took it to. Now I have a p0304 misfire and a p0134 o2 sensor code. Ugh!

 

You can unscrew that fill tube.

 

Yea I know the filler neck can come off, I was more worried that the light-colored residue on the inside could be from coolant getting into the oil.

 

Nope. Completely normal..

 

Normal but check that your plastic PCV valve/oil separator (located on right side of valve cover) isn't clogged.

 

Especially normal on vehicles that get driven short distances or not very often.



Brian.

 

Yep, normal for a LR.
Now if this was an early Porsche 944 with the internal oil cooler = BAD THINGS!