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#134252 - 05/15/05 08:32 PM 97 Ford 150, 5w30 or 10w30?
James408 Offline


Registered: 04/27/05
Posts: 144
Loc: Texas
I own a 1997 Ford F150 Flareside with the 4.6 V8. The owner's manual recommends a 5w30. The dealership and a mechanic friend suggested that I use the 5w30 instead of a 10w30 because the oil will get to the overhead cams faster. The truck has 86,000 miles on it. I have not had a any problems with this truck. I am have use Valvoline 5w30 exclusively with no problems and currently using Valvoline Max Life 5w30. I live in South Texas.

Would it hurt to go to a 10w30 with the overhead cams?

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#134253 - 05/15/05 08:36 PM Re: 97 Ford 150, 5w30 or 10w30?
TallPaul Offline


Registered: 10/22/03
Posts: 12915
Loc: By Detroit
I would think at all times the 10w30 will get to your cams as fast or faster in the generally warmer ambient temperatures of Texas than a 5w30 would here in Michigan. I think you are OK. Maxlife is good stuff.

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#134254 - 05/16/05 09:01 AM Re: 97 Ford 150, 5w30 or 10w30?
Blue99 Offline


Registered: 09/27/03
Posts: 2233
Loc: Wisconsin
I agree 110% with what TallPaul is saying - with the warmer temps in Texas, a 10W-30 at start-up is at a similar viscosity to a 5W-30 in the cooler temps of northern states.

If a start-up oil viscosity of 200-400 cSt created any problems, F150 engine parts would be laying all over the roads in Wisconsin!

Here's a comparison to illustrate the actual viscosities at normal start-up temps:

code:
Viscosity in cSt
TEMP Havoline
C F 5W-30 10W-30
0 32 573 814
5 41 403 556
10 50 293 389
15 59 218 280
20 68 165 206
25 77 127 155
30 86 100 118



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#134255 - 05/16/05 09:30 AM Re: 97 Ford 150, 5w30 or 10w30?
Kestas Offline



Registered: 06/04/02
Posts: 10805
Loc: The Motor City
That chart really puts things in perspective. The way I read it, going from 10W- to 5W- buys you roughly ten more degrees Fahrenheit cold temperature.... not a whole lot.

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#134256 - 05/16/05 09:53 AM Re: 97 Ford 150, 5w30 or 10w30?
JAYCEE Offline


Registered: 11/01/04
Posts: 512
Loc: East Texas
I live pretty far north of you and I run 15W-40 in my 95 F150 I-6 summer & winter. No problems so far.

Right now I have Delo 400 SAE30 in my 92 3.0L Toyota.

Personally, I like the thicker oils, especially for Texas summers.

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#134257 - 05/15/05 11:17 PM Re: 97 Ford 150, 5w30 or 10w30?
robbobster Offline


Registered: 06/02/03
Posts: 1175
Loc: Long Beach, CA
My truck has seen 10W30 exclusively since the first oil change.

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#134258 - 05/16/05 02:18 AM Re: 97 Ford 150, 5w30 or 10w30?
James408 Offline


Registered: 04/27/05
Posts: 144
Loc: Texas
Thanks guys for your time and the cool chart. I believe I'll put the 10w30 in next oil change and I believe it will be more stable than the 5w30 for my application. [Cool]

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#134259 - 05/16/05 02:23 AM Re: 97 Ford 150, 5w30 or 10w30?
Drew99GT Offline


Registered: 10/11/02
Posts: 20656
Loc: Colorado Springs
quote:
Originally posted by James408:
Thanks guys for your time and the cool chart. I believe I'll put the 10w30 in next oil change and I believe it will be more stable than the 5w30 for my application. [Cool]

Nope. You'll probably wipe a cam clean from lack of lubrication at startup with the 10w-30 in the Texas heat. [LOL!] Hehehe, just kiddin (little argument goin round the board lately between 5w vs. 10w). I agree 100% with the others who have posted. 10-30 is preferable; probably all year for your application.

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#134260 - 05/19/05 09:21 AM Re: 97 Ford 150, 5w30 or 10w30?
aztec12 Offline


Registered: 07/24/04
Posts: 437
Loc: north carolina
what would you guys reccomend here in north carolina climate 5w30 or 10w30 year round? same engine

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#134261 - 05/19/05 10:08 AM Re: 97 Ford 150, 5w30 or 10w30?
Big Jim Offline


Registered: 09/24/04
Posts: 1571
Loc: Thousand Oaks, CA
I would use 5w30 in that engine because it was designed from a clean sheet of paper with 5W30 in mind. Your just kidding yourself if you believe that 10w30 is any better for that engine.

I believe that the discussion should be if you should be using 5w30 or 5w20, which is what Ford recommends backfitting that engine to. To me the answer would be that it is a toss up. I would tend to go with 5w30 because it has already had a diet of it for most of it's life, but it would be close call.

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#134262 - 05/19/05 11:32 AM Re: 97 Ford 150, 5w30 or 10w30?
Ugly3 Offline


Registered: 08/06/04
Posts: 2635
Loc: Chicago
quote:
Originally posted by James408:
I own a 1997 Ford F150 Flareside with the 4.6 V8. The owner's manual recommends a 5w30. The dealership and a mechanic friend suggested that I use the 5w30 instead of a 10w30 because the oil will get to the overhead cams faster. The truck has 86,000 miles on it. I have not had a any problems with this truck. I am have use Valvoline 5w30 exclusively with no problems and currently using Valvoline Max Life 5w30. I live in South Texas.

Would it hurt to go to a 10w30 with the overhead cams?

5w30 all the way.

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#134263 - 05/19/05 04:59 PM Re: 97 Ford 150, 5w30 or 10w30?
TallPaul Offline


Registered: 10/22/03
Posts: 12915
Loc: By Detroit
I would not hesitate to run 10w30 in it, just not cheapo stuff, but at least a semi-synthetic blend.

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#134264 - 05/19/05 05:24 PM Re: 97 Ford 150, 5w30 or 10w30?
Cutehumor Offline


Registered: 12/10/02
Posts: 8945
Loc: USA
10w-30 is the way to go. however, if your not consuming 5w-30 at all, I would stick with it just to get every MPG that I could get.

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#134265 - 05/19/05 06:43 PM Re: 97 Ford 150, 5w30 or 10w30?
C4Dave Offline


Registered: 04/25/04
Posts: 419
Loc: Tennessee
Ford recommends 5w20 for this motor. They tested that motor using 5w20 in Death Valley towing uphill at the maximum weight rating. 5w20 met all performance requirements. Is your service more severe than that? No? Then why second guess Ford?

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#134266 - 05/19/05 07:28 PM Re: 97 Ford 150, 5w30 or 10w30?
Eric Smith Offline


Registered: 02/26/05
Posts: 2592
Loc: Kansas City, KS
C4Dave is right on the money. I just switched to 5w-20 in my 2000 5.4L and just back from a trip in the ozarks. If your not familiar with the ozarks it's extremely hilly. I had to leave in drive most of the time so it was pushing 3-4k depending on mph and the slope. I had no consumption ,which is a major surprise, and the engine ran through the whole day as strong as when I first started it up, the transmisson didn't care for the beating though. I know nothing scientific to that but at least use a thin 5w-30, you're wallet will thank you. Eric

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