1997 f150 weird looking oil
Thread Starter
|
Senior User
Joined: Oct 2011
Posts: 223
Likes: 1
1997 f150 weird looking oil
]i have a 1997 f150 4x4 with 163000 miles on it. today i was going around the truck checking fluids when i checked the oil and it was a little low so i went to add some and underneath the fill cap there was this whiteish grayish looking goo. it was also all the way down the neck of the fill tube and down in the engine a little ways. i had no idea what it was so i cleaned it out and added some oil then i went and took it for a drive and when i got back and checked it again it was back. Has anyone ever seen this before or know what it might be?
the picture below was after i drove it. there was more there before i cleaned it
[IMG]
[/IMG]
the picture below was after i drove it. there was more there before i cleaned it
[IMG]
Lead Driver
Joined: Sep 2006
Posts: 7,907
Likes: 143
A normal conditon that is dependent on how much moisture there is in the crankcase and how much the truck is driven to fully hot temperatures and not driven short time periods.
It is condensation at the highest coldest point in the closed crankcase system.
It came back from the short drive your took.
Todays oils will react to moisture like that.
As a test sometime, spread some oil outside on concrete and let it rain a couple time on the patch.
You will see the same tendency of the oil to breakdown.
Only other remote possibility is there is a cooling system leak internal but I doubt that is the case here.
Not to worry unless the fill jug keep getting low.
Good luck.
It is condensation at the highest coldest point in the closed crankcase system.
It came back from the short drive your took.
Todays oils will react to moisture like that.
As a test sometime, spread some oil outside on concrete and let it rain a couple time on the patch.
You will see the same tendency of the oil to breakdown.
Only other remote possibility is there is a cooling system leak internal but I doubt that is the case here.
Not to worry unless the fill jug keep getting low.
Good luck.
Senior User
Joined: Mar 2011
Posts: 462
Likes: 1
From: MN
The residue is correctly diagnosed above. Although, the use of full synthetic oil eliminates this whitish build-up. The synthetic oil cleans your engine unlike the regular petroleum oil. This residue build-up has been there every time I've run regular petroleum oil. Switch to full synthetic and the residue will be gone.
Thread Starter
|
Senior User
Joined: Oct 2011
Posts: 223
Likes: 1
thank you for the quick replies. it just scarred me a little bit when i say it. i am planning on getting oil this weekend and changing it. is there any way to clean the old oil out of the engine to do a little better oil change. ive heard of putting a little diesel fuel in the oil before draining it to clean the engine will that work
Trending Topics
New User
Joined: Mar 2012
Posts: 13
Likes: 0
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
skullone
1999 - 2003 7.3L Power Stroke Diesel
1
Jan 22, 2013 08:07 PM
