The Ford Barn

FrankWest · 10-26-2024, 01:24 PM

I am using Valvoline Daily Protection Non-Detergent SAE 30 Conventional Motor oil and just changed it and the old oil flowed out like water. Should I be using sae 40?

ronn · 10-26-2024, 01:38 PM

not really- the 30 is sufficient. Truthfully, either is fine, unless you are in an extremely cold climate.

The Master Cylinder · 10-26-2024, 02:38 PM

Maybe it is diluted. Is your engine running excessively rich?

Bob C · 10-26-2024, 02:42 PM

Did the old oil smell like gas?

WHN · 10-26-2024, 03:16 PM

Wow! Another question on oil. Everyone has their own ideas including me.

If it’s a higher mileage engine. I think SAE 30 might be to light. I like to use 20-50 HD. I could go on about why but this is just my go to Model A engine oil.

eagle · 10-26-2024, 05:32 PM

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Do you have a downdraft carb and manifold by chance? If so, then a leaky float valve will run gas into the engine. Ends up in the oil.

nkaminar · 10-27-2024, 06:48 AM

All good comments.

I run Valvoline 20W-50 racing oil.

Fullraceflathead · 10-27-2024, 09:39 AM

If it's diluted with a lot of fuel it'll definitely be thin!!!

katy · 10-27-2024, 10:18 AM

Was the oil hot? Or had it been sitting and cooled down?

Jim/GA · 10-27-2024, 11:27 AM

Quote:

Originally Posted by FrankWest

I am using Valvoline Daily Protection Non-Detergent SAE 30 Conventional Motor oil and just changed it and the old oil flowed out like water. Should I be using sae 40?

Attached are scans of 1931 Ford Instruction Book (Owners Manual).

10-26-2024, 01:24 PM	#1
FrankWest Senior Member Join Date: Sep 2013 Posts: 3,157	used oil flows like water I am using Valvoline Daily Protection Non-Detergent SAE 30 Conventional Motor oil and just changed it and the old oil flowed out like water. Should I be using sae 40?

10-26-2024, 01:38 PM	#2
ronn Senior Member Join Date: Feb 2011 Location: NNNNNNNNJJJJJJJJJJ Posts: 7,873	Re: used oil flows like water not really- the 30 is sufficient. Truthfully, either is fine, unless you are in an extremely cold climate.

10-26-2024, 02:38 PM	#3
The Master Cylinder Senior Member Join Date: Aug 2012 Location: The Moon Posts: 1,158	Re: used oil flows like water Maybe it is diluted. Is your engine running excessively rich? __________________ The Master Cylinder Enjoying life at the beach in SoCal... Last edited by The Master Cylinder; 10-26-2024 at 02:47 PM.

10-26-2024, 02:42 PM	#4
Bob C Senior Member Join Date: May 2010 Location: So Cal Posts: 9,598	Re: used oil flows like water Did the old oil smell like gas?

10-26-2024, 03:16 PM	#5
WHN Senior Member Join Date: Mar 2017 Location: Connecticut Shoreline Posts: 2,066	Re: used oil flows like water Wow! Another question on oil. Everyone has their own ideas including me. If it’s a higher mileage engine. I think SAE 30 might be to light. I like to use 20-50 HD. I could go on about why but this is just my go to Model A engine oil.

10-26-2024, 05:32 PM	#6
eagle Senior Member Join Date: Aug 2011 Location: Eagle Bend, MN Posts: 2,085	Re: used oil flows like water Sponsored Links (Register now to hide all advertisements) Do you have a downdraft carb and manifold by chance? If so, then a leaky float valve will run gas into the engine. Ends up in the oil. __________________ "There are some that can destroy an anvil with a teaspoon and shouldn't be allowed to touch anything resembling a tool."

10-27-2024, 06:48 AM	#7
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 6,847	Re: used oil flows like water All good comments. I run Valvoline 20W-50 racing oil. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.

10-27-2024, 09:39 AM	#8
Fullraceflathead Senior Member Join Date: May 2012 Location: Chillicothe, Missouri Posts: 1,851	Re: used oil flows like water If it's diluted with a lot of fuel it'll definitely be thin!!! __________________ "If I asked people what they wanted they would have said faster horses." -Henry Ford "Primitive technology is not a design flaw" 1928 Ford Model A Roadster Pickup 1930 Gordon Smith Air Compressor 1941 Willy's Pickup 1960 Thunderbird-For Sale 1964 Buick Riviera 2x4 425 1965 Pontiac GTO, 455 Super Duty 2004 Dodge Ram SRT-10, V-10 Viper 1977 Charger Jet Boat,460 Ford,Jacuzzi Jet Front Engine Nostalgia Dragster,Supercharged 296 "Fullrace Flathead" Ford Engine Build up on DVD ask

10-27-2024, 10:18 AM	#9
katy Senior Member Join Date: Jun 2015 Location: Red Deer, Alberta Posts: 6,071	Re: used oil flows like water Was the oil hot? Or had it been sitting and cooled down? __________________ If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn!