Gas Engine Durability Using 5w20 Oil
Post Fiend
Joined: Jan 2002
Posts: 5,859
Likes: 7
From: USA
Originally Posted by ford390gashog
yes and under load a thinner oil is better it removes heat faster and cools internal parts.
--------------------------------------------------------------------------Not if it breaks down and loses it ability to protect bearing surfaces .
I agree running 10wxx or 20wxx in newer engines is wrong.
but stepping to a 5w30 weight is alowing the temperature fluction in the summer/ winter to keep the protection of these surfaces when break down occurs.
I also disagree with what say about tighter tolerances in bearings.
do the research on bearing clearances from older engines to newer
you will be suprised at what they are.
Thinner oil alowed them to gain fuel mpgs for epa reasons
Thats all
They have also went back to 5w30 on newer engines.
--------------------------------------------------------------------------
quote wrench,
Sometimes the people that manufacture the engines know what they are talking about
--------------------------------------------------------------------------
I don't trust Ford or any company,they are in it to make money.
Cars an trucks nowadays are engineered to last so many miles and thats it
--------------------------------------------------------------------------
yep have you seen the ford test for 5w20? it is very intertesting i will try to find it.
--------------------------------------------------------------------------Not if it breaks down and loses it ability to protect bearing surfaces .
I agree running 10wxx or 20wxx in newer engines is wrong.
but stepping to a 5w30 weight is alowing the temperature fluction in the summer/ winter to keep the protection of these surfaces when break down occurs.
I also disagree with what say about tighter tolerances in bearings.
do the research on bearing clearances from older engines to newer
you will be suprised at what they are.
Thinner oil alowed them to gain fuel mpgs for epa reasons
Thats all
They have also went back to 5w30 on newer engines.
--------------------------------------------------------------------------
quote wrench,
Sometimes the people that manufacture the engines know what they are talking about
--------------------------------------------------------------------------
I don't trust Ford or any company,they are in it to make money.
Cars an trucks nowadays are engineered to last so many miles and thats it
--------------------------------------------------------------------------
yep have you seen the ford test for 5w20? it is very intertesting i will try to find it.
Yes I saw it ,but don't believe it and wouldn't promote it
Again to each his own on this subject,its been around a long time.
Well I messed up that quote response didn't I
Rich
Last edited by FortyFords; Oct 8, 2005 at 08:13 PM.
Freshman User
Joined: Feb 2004
Posts: 37
Likes: 0
From: UNION, NJ
5w20........
Okay my (12/04) 05 F-350 has 2960 miles on it. At 1500 miles I checked the oil and it was a quart low. Guess I had been too excited to remember to check it when I originaly took delivery. So maybe it was low from the factory? But now at 2960 and almost time for service she is low another quart. What give's............
Logistics Pro
Joined: Jul 2002
Posts: 4,821
Likes: 19
From: South Dakota
I'd make a guess that the motor is still breaking in.
Not at all uncommon for a new motor to use some oil.
Back to the topic....
I sure hope that no one is seriously putting a 10w40 or higher grade in a modular motor with less than 100k mi. Modular motors have a tendency to pool the higher weight oils at the top of the motor as the oil is to thick to drain back as fast as a lighter oil can, which results in accerated bottom end wear and poor mpg.
Not at all uncommon for a new motor to use some oil.
Back to the topic....
I sure hope that no one is seriously putting a 10w40 or higher grade in a modular motor with less than 100k mi. Modular motors have a tendency to pool the higher weight oils at the top of the motor as the oil is to thick to drain back as fast as a lighter oil can, which results in accerated bottom end wear and poor mpg.
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