Become really really thin after sitting?

I'm working on my W8 and checked the oil, it's extremely oddly thin......car was left outside and just pushed inside two hours ago and I checked it with ice still on the car aka cold.

The oil doesn't have fuel smell (car has a dead pump that downed it for 2.25 years), doesn't have water, no coolant, feels normal on the hands, not dark whatsoever, etc etc but if you pull the stick it will drip off like water almost.

Contextually I'm comparing it to the LS460 with old (300 miles left before change) 0w-20 M1 oil with the famous Lexus DI fuel contamination putting it likely near the thin end. Car stays inside a garage that doesn't go below 50* and if I pull the stick out I can shake it a good bit before a drop forms and would need to whip it to have it detach.

Ive asked some other shop owners and people in the industry what is going on/if they have ever seen it, no one really knows. I'm changing it anyway but now I'm very intrigued what happened to the oil.

Anyone here see old oil thin out like this? Is it not oil?

 

Even if not contaminated, motor oil loses viscosity over time. You said it was "old" oil..............how old"

 

I've never seen that happen outside of fuel dilution. Motor oil mixed with gasoline does reduce the fuel smell a lot vs. just gas.

 

Thats what's throwing me, it doesn't smell of gas nearly like I would expect it to when THIS thin. Also doesn't burn.....regardless I'm going to change it but it's concerning me

 

If it's like water, it definitely broke down.

Oil is just a hydrocarbon chain as y'all know.
And thin oil means it was cut but a solvent, gas?

Unless it broke down on its own.
If seen my Mobil 1 thin down after a couple thousand miles. Definitely looks thinner then when I put it in.

 

Not sure hence my query lol! Normally I would expect it to be oxidized or smell of fuel at least a little bit, not clear as new oil and no scent.

 

This is one time that I would get a lab to test the oil.

 

Can you take an iPhone video of it to show us how thin it is?

 

Yeah I'll do that tomorrow, I'm wiped out today. Too cold and the drive back sucked since I took a customer car back to their house. My 20 min drive became an hour since their tires suck

 

Get some rest!

 

Yep fuel dilution.

 

Motor oil will not break down and thin out from two to three years of just sitting. If anything, it's the additives package in the oil that may degrade but the oil won't just thin out. The one year time limit on oil service intervals is really a lowest common denominator issue and a lot of myth.

To know, you really need to send in an oil sample. Blackstone is cheap enough that it would be worth it to see. I have a barely driven, weekend-fun car that I run analysis every fluid change. The oil sits for years in that car between changes.

Sounds like you've got a dilution problem.

 

Here is what is going on, last time it will be that way since I'm changing it so the car can move again lol!

 

That is weird! Has to be fuel dilution

 

Right? Issue is the whole reason it doesn't move is a dead fuel pump and it's not DI so no pump seals to leak....I just don't get it.