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[GMCnet] Toad Ford 4.6 engine [message #259754]

Fri, 22 August 2014 10:48

WAYNE NESBIT

Messages: 5
Registered: August 2014

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Junior Member

The year round recommended oil is 5 w 20
This seems so thin for summer use.
Any ideas on why?
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Re: [GMCnet] Toad Ford 4.6 engine [message #259755 is a reply to message #259754]

Fri, 22 August 2014 11:04

jknezek

Messages: 1057
Registered: December 2007

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Senior Member

WAYNE NESBIT wrote on Fri, 22 August 2014 11:48

The year round recommended oil is 5 w 20
This seems so thin for summer use.
Any ideas on why?
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Modern engines are moving this direction. Thinner oil is supposed to lead to mpg improvements at the margins. Honda's newer engines all specify 0W20 synthetic if you want to keep your warranty. I'd imagine better tolerances in the manufacturing process and better oils are also a factor that makes this possible.

Thanks,
Jeremy Knezek
1976 Glenbrook
Birmingham, AL

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Re: [GMCnet] Toad Ford 4.6 engine [message #259756 is a reply to message #259754]

Fri, 22 August 2014 11:08

jknezek

Messages: 1057
Registered: December 2007

Karma: 5

Senior Member

WAYNE NESBIT wrote on Fri, 22 August 2014 11:48

The year round recommended oil is 5 w 20
This seems so thin for summer use.
Any ideas on why?
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Thanks,
Jeremy Knezek
1976 Glenbrook
Birmingham, AL

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Re: [GMCnet] Toad Ford 4.6 engine [message #259762 is a reply to message #259754]

Fri, 22 August 2014 12:00

bwevers

Messages: 597
Registered: October 2010
Location: San Jose

Karma: 5

Senior Member

I read that Ford moved to 5W-20 to get a miniscule increase in their "Fleet Average Fuel Economy".
Then on the Explorer they had a problem with the V6 hydraulic timing chain tensioner leaking too much
and causing timing chain noise. Some fleet operators claim that the 5W-30 works better for them.

Bill Wevers GMC49ers, GMC Western States 1975 Glenbrook - Manny Powerdrive, OneTon 455 F Block, G heads San Jose

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Re: [GMCnet] Toad Ford 4.6 engine [message #259768 is a reply to message #259754]

Fri, 22 August 2014 13:24

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma: 7

Senior Member

WAYNE NESBIT wrote on Fri, 22 August 2014 11:48

The year round recommended oil is 5 w 20
This seems so thin for summer use.
Any ideas on why?

Wayne,

It is all about CAFE and emissions.
The engineering in modern engines makes them almost no descendent of the iron behemoths we all used to know.
If you are worried about wear, don't be. The materials and finishes in the modern moving parts is what we used to dream of.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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Re: [GMCnet] Toad Ford 4.6 engine [message #259788 is a reply to message #259754]

Fri, 22 August 2014 18:04

lotsofspareparts

Messages: 726
Registered: May 2014
Location: Arlington, WA

Karma: -9

Senior Member

As I was a lube tech for 4 years I can tell you this with no doubt.... Mileage and emissions.

May not seem like a lot for one vehicle (your vehicle) but when you spread it across 10,000 vehicles it does make a difference overall.

I for one do not run anything lighter than 10W-30 in any vehicle I own. They recommend 5W-20 for my 04 Hemi Durango and my 05 Hemi Ram 1500 pickup, never gonna happen. Rather be heavier than lighter.

Jared

Jared & Tina Lazaron + 14yr old Daughter..... 77 Eleganza II "Recherché"..... 73 Canyon Lands 230 "Elephant"

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Re: [GMCnet] Toad Ford 4.6 engine [message #259792 is a reply to message #259788]

Fri, 22 August 2014 18:51

A Hamilto

Messages: 4508
Registered: April 2011

Karma: 39

Senior Member

lotsofspareparts wrote on Fri, 22 August 2014 18:04

As I was a lube tech for 4 years I can tell you this with no doubt.... Mileage and emissions.

May not seem like a lot for one vehicle (your vehicle) but when you spread it across 10,000 vehicles it does make a difference overall.

I for one do not run anything lighter than 10W-30 in any vehicle I own. They recommend 5W-20 for my 04 Hemi Durango and my 05 Hemi Ram 1500 pickup, never gonna happen. Rather be heavier than lighter.

Jared

I have 3 Fords that the Owner's Manual says to use 5W20. That's what they get. The lowest mileage is the 13 year old, with about 140,000. The 9 year old and 16 year old are about tied with over 170,000 miles each.

If they were going to fail due to oil being too light, it would have happened a hundred thousand miles ago on one or more of them.

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Re: [GMCnet] Toad Ford 4.6 engine [message #259793 is a reply to message #259792]

Fri, 22 August 2014 19:08

lotsofspareparts

Messages: 726
Registered: May 2014
Location: Arlington, WA

Karma: -9

Senior Member

A Hamilto wrote on Fri, 22 August 2014 16:51

lotsofspareparts wrote on Fri, 22 August 2014 18:04
As I was a lube tech for 4 years I can tell you this with no doubt.... Mileage and emissions.

May not seem like a lot for one vehicle (your vehicle) but when you spread it across 10,000 vehicles it does make a difference overall.

I for one do not run anything lighter than 10W-30 in any vehicle I own. They recommend 5W-20 for my 04 Hemi Durango and my 05 Hemi Ram 1500 pickup, never gonna happen. Rather be heavier than lighter.

Jared
I have 3 Fords that the Owner's Manual says to use 5W20. That's what they get. The lowest mileage is the 13 year old, with about 140,000. The 9 year old and 16 year old are about tied with over 170,000 miles each.

If they were going to fail due to oil being too light, it would have happened a hundred thousand miles ago on one or more of them.

They were probably engineered for it too. My trucks came from the factory with a 5w-30 recommendation. 4, maybe 5 years ago they came out with a TSB that stated my Hemi engines were able to run 5W-20. Not gonna do it, never gonna happen. I think it is neat that some rigs can run this water consistency oil through them, tells me manufacturing has gotten better and tolerances are tighter. I drive my truck hard, to top that off I tow 4k lbs with it every other week. 123k miles and counting, and not a thing done except a 100k tune up and oil changes.

I am not going to say anything bad about lighter oils, and have not. I run what I run, you run what you run.

Jared

Jared & Tina Lazaron + 14yr old Daughter..... 77 Eleganza II "Recherché"..... 73 Canyon Lands 230 "Elephant"

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Re: [GMCnet] Toad Ford 4.6 engine [message #259794 is a reply to message #259793]

Fri, 22 August 2014 20:23

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

Honda Fit for years uses 5W 20 or 0W 20.

133 second response time on this posting.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

[Updated on: Fri, 22 August 2014 20:25]

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Re: [GMCnet] Toad Ford 4.6 engine [message #259836 is a reply to message #259754]

Sat, 23 August 2014 15:23

Bob de Kruyff

Messages: 4260
Registered: January 2004
Location: Chandler, AZ

Karma: 1

Senior Member

WAYNE NESBIT wrote on Fri, 22 August 2014 09:48

The year round recommended oil is 5 w 20
This seems so thin for summer use.
Any ideas on why?
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Going back to a previous thread, sometimes engineers really do know what they are doing. Your attitude may vary Smile

Bob de Kruyff
78 Eleganza
Chandler, AZ

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Re: [GMCnet] Toad Ford 4.6 engine [message #260037 is a reply to message #259754]

Mon, 25 August 2014 14:19

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

I was at ORielly's getting oil and filter for my new used Kia which specifies 5W-20. m ORielly's synthetic is the same price as the name brand dino stuff. The store guy claims Mobil produces it for them; and it carries the same rating. So I'm trying it. My experience has been, the new engines built for the lower viscosity oilget aklong just fine with it. If you're going to put a heavier oil in them, be careful on a cold startup in the winter - it is possible to wring off the quillshaft driving the pump.

I wonder about running Aeroshell in the 455s........

--johnny

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

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Re: [GMCnet] Toad Ford 4.6 engine [message #260052 is a reply to message #260037]

Mon, 25 August 2014 16:56

hal kading

Messages: 642
Registered: February 2004
Location: Las Cruces NM

Karma: 4

Senior Member

Johnny,

Bad idea. Aviation oil doesn't have the right additive package for automotive use. Likewise don't use automotive oil in aircraft engines.

Hal Kading 78 Buskirk Las Cruces NM

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Re: [GMCnet] Toad Ford 4.6 engine [message #260321 is a reply to message #259754]

Thu, 28 August 2014 07:33

jhbridges

Messages: 8412
Registered: May 2011
Location: Braselton ga

Karma: -74

Senior Member

I'd never put anything but aero in a flat or round motor. I wonder what the diesel aviation engines use...... I've been out of it too long.

--johnny
'76 23' transmode norris
Braselton ga

Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons. Braselton, Ga. I forgive them all, save those who hurt the dogs. They must answer to me in hell

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