Low oil level

eddieguy

Hero Member
Joined
Dec 1, 2006
Messages
282
Points
16
Make
Ford
Model
Flex
Year
2011
Miles
76,000
Engine
?
Would like to know if its ok to top off 5w20 with 5w30
 

NickD

wrench
Joined
Aug 28, 2007
Messages
4,954
Points
48
Ford with a 9 year warranty? Assume the oil outside of the weight is the same, not mixing conventional with Synthetic.

Also sounds like you need a Seafoam treatment, still burning carbon, builds up on piston rings, lets oil slip by. Also carbons up spark plugs that is conductive on the insulator, shorting out your spark decreasing your performance and fuel economy. Can mix one ounce of Seafoam with each quart of oil to clean your hydraulic lifters before your next oil change.
 

paulo57509

Jr. Member
Joined
Apr 9, 2014
Messages
27
Points
1
Same blender/brand of oil....probably OK.

However, I would try to locate the same grade and brand that's already in the crankcase..
 

jigfeett

Hero Member
Joined
May 30, 2008
Messages
253
Points
18
Devils advocate , oil change places throw in what ever big bin oil they buy unless they upsell you to synthetic when your rig has conventional or blend. Also they do not know if you even have the correct oil in your vehicle. Always pull over right after an oil change and look for leaks, on the ground.
My $.02.
$.02
 

nickb2

Wrench. Diagnostic Tech.
Joined
Nov 22, 2008
Messages
10,911
Points
63
Location
St-Hyacinthe, Quebec, Canada
I also have my $.02, fords engines of this era just dont like anything else but 5w20 synthetic. Adding a quart here and there of other stuff, not really a problem, just maintain that engine with real good syn 5w20 and just wait for the rest.

It was not specified what engine is in that flex but I am suspecting it is your basic 3.5l duratech, they dont like anything other than 5w20.

But the disclaimer here is I live in a region where temps vary GREATLY, so I do roll some cop cars with same engine, with 5w30 when the variable cam system gets some wear, but usually the police packs come with the 3.7 awd, same engine basically when you look at it, all those get 5w20 mineral, cuz they idle so much, so we cant go by normal interval on these fords.
 
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