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10w40 Amsoil & 66 Mustang 289ci engine analysis #2839100
12/18/12 11:23 AM
12/18/12 11:23 AM
Joined: Dec 2012
Posts: 19
New York/Va/Fla
52pu Offline OP
52pu  Offline OP
Joined: Dec 2012
Posts: 19
New York/Va/Fla
Bob,

Just recently bought a 66 mustang with the stock 298 ci v8 with 86144 miles. From all indications the pan or heads have never been off. Did my oil change to Amsoil 10w40 and with about 25 miles on the oil pulled a sample for analysis with Analysts, Inc. Their results are as follows in ppm: Iron 29, Chromium 1, Nickle <1, Aluminum <1, Lead 41, Copper 1,
Tin <1, Silver <0.1, Titanium <1, Silicon 9, Boron 18, Sodium 5, Potassium <10, Molybdenum 16,
Phosp 1299, Zink 1445, Calcium 3707, Barium <10, Magnesium 17, Antimony <30, Vanadium <1. Water was 0.1, Viscosity @100 degrees C was 13.4, Visc Grade 40, TBN 8.96, T/S % vol 0.5, Fuel% 2.3. Request your analysis and recommendations as to rebuild. Am i correct in thinking that Lead= overlay of bearing material, Iron=cyl walls, valve guides, piston rings, oil pump & Nickle=bearing material. In your opinion does the ppm levels indicate my immediate attention? Thank you.

Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2839103
12/18/12 11:25 AM
12/18/12 11:25 AM
Joined: Nov 2009
Posts: 4,021
New England
cchase Offline
cchase  Offline
Joined: Nov 2009
Posts: 4,021
New England
For 25 miles those numbers are huge.

But, do you know the history of the engine? Has it been sitting?

Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2839106
12/18/12 11:26 AM
12/18/12 11:26 AM
Joined: Jul 2012
Posts: 1,287
ohio
randomhero439 Offline
randomhero439  Offline
Joined: Jul 2012
Posts: 1,287
ohio
Was this 25 track racing miles, yikes


'03 Accord V6-6MT: M1EP 0w-20, daily
'10 Mercedes GLK: M1 0w-40, wife's car
'00 S2000: M1 0w-40, track car
'08 Corvette Z06: M1EP 5w-30, summer daily

Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2839124
12/18/12 11:34 AM
12/18/12 11:34 AM
Joined: Dec 2012
Posts: 19
New York/Va/Fla
52pu Offline OP
52pu  Offline OP
Joined: Dec 2012
Posts: 19
New York/Va/Fla
Just a well kept car, engine runs great. I am concerned with the iron and lead numbers. This i was thinking of pulling the pan for new rod & main bearings, oil pump, new timing chain and gears.

Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2839129
12/18/12 11:39 AM
12/18/12 11:39 AM
Joined: Jan 2010
Posts: 1,740
Rochester, NY
NateDN10 Offline
NateDN10  Offline
Joined: Jan 2010
Posts: 1,740
Rochester, NY
What are the units for water? Is that 0.1%, or 0.1/1 = 10%?

Iron and lead are very high for the miles. Those numbers would be borderline OK for 5000 miles on the oil. Has the engine been sitting for a long time? If so, you may want to do a couple short (100 mi) oil-change intervals with a cheaper oil than Amsoil (either a 10W-40 PCMO or 15W-40 HDEO) to clean it out.


2016 Mazda3 - 20,000 mi.
2011 Toyota Sienna - 100,000 mi.
Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: NateDN10] #2839150
12/18/12 11:53 AM
12/18/12 11:53 AM
Joined: Dec 2012
Posts: 19
New York/Va/Fla
52pu Offline OP
52pu  Offline OP
Joined: Dec 2012
Posts: 19
New York/Va/Fla
The water analysis was presented like this: Water % 0.1. The car did a lot of sitting, will try and flush it out as you suggest.

Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2839162
12/18/12 12:06 PM
12/18/12 12:06 PM
Joined: Jan 2010
Posts: 1,740
Rochester, NY
NateDN10 Offline
NateDN10  Offline
Joined: Jan 2010
Posts: 1,740
Rochester, NY
Ok, since the water's just 0.1%, it's probably just condensation. If it was 10% I would have been asking about a head gasket leak.


2016 Mazda3 - 20,000 mi.
2011 Toyota Sienna - 100,000 mi.
Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2840205
12/19/12 04:14 AM
12/19/12 04:14 AM
Joined: May 2007
Posts: 7,615
Indianapolis, IN
dnewton3 Offline
dnewton3  Offline
Joined: May 2007
Posts: 7,615
Indianapolis, IN
Very interesting.

I, too, have a classic old 1966 Mustang 289 v-8, with about 78k miles on it (IIRC). Engine has never been apart. I run 10w-30 Rotella dino in mine. I'll have to pull another UOA here in a year or so and we can compare/contrast.

The wear metals in these old Windsor v-8's can be pretty high. The 289 was known to eat cam bearings, and then wear into the cam itself after the bearing material is done. My oil pressure is fine when running at driving speeds, but it's VERY LOW when idling; my cam bearings are on their way out. It's inevitible. But I look at it as an upcoming opportunity to do a teardown, and add a little spice to the engine someday when time/money offer the opportunity. Modern materials and better machining available today can make these engines last much longer, if a proper reman is done.


Does your engine need "immediate attention"? Probably not. But you might as well start saving up money for the rebuild; you cannot avoid it. You can prolong it a bit, but it's not avoidable.


In this case, using Amsoil isn't worth the money. Your OCIs are going to be short enough that syns won't make any difference. Use either a 10w-30 or 15w-40 HDEO dino. That will do as well for less cash. No oil is going to stop the pressure decay; it will eventually get so bad that you'll have to address it. When you cannot hold decent pressure even at driving rpm, it's time to tear her down.

Last edited by dnewton3; 12/19/12 04:21 AM.

The act of preventative maintenance, in and of itself, is FAR MORE important than brand/grade/base choices among lubes and filters.
- under maintaining something is akin to abuse/neglect; that can kill equipment by shortening the lifespan
- over maintaining something has never been proven to be anything but a waste of time and money
Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: dnewton3] #2841701
12/20/12 09:13 AM
12/20/12 09:13 AM
Joined: Dec 2012
Posts: 19
New York/Va/Fla
52pu Offline OP
52pu  Offline OP
Joined: Dec 2012
Posts: 19
New York/Va/Fla
Good advice on the dino oil. Among other things i've been an Amsoil dealer for 27 years so i have some sitting around. I'll may drive it till i hear bad noises? This past summer one of our guys in the Mustang Club had a low mileage 289 from a Fairlane that i passed up. Then i may put in a crate 302 and be done with it? I've done the T5 conversion already and the 302 will bolt right up. I guess i'll put a few miles more on the oil in the spring and do another sample.

T

Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2842755
12/21/12 07:07 AM
12/21/12 07:07 AM
Joined: Oct 2008
Posts: 986
Northern, NY
Rob_Roy Offline
Rob_Roy  Offline
Joined: Oct 2008
Posts: 986
Northern, NY
If that engine has been run with conventional oil its whole life, the Amsoil may have have done some cleaning that bumped the wear metals up. I'd stick with a conventional 15w-40 until you get a chance to investigate further.

How much do you plan on driving this car? If it is only taken out on occasion it may run for many years just the way it is.


2016 Ford Expedition EL Platinum
2016 Ford Expedition XLT
1999 Ford F350, V10
Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: Rob_Roy] #2843382
12/21/12 02:59 PM
12/21/12 02:59 PM
Joined: Dec 2012
Posts: 19
New York/Va/Fla
52pu Offline OP
52pu  Offline OP
Joined: Dec 2012
Posts: 19
New York/Va/Fla
The wear metals were very obvious when i drained the dino oil. Things are coming apart reference the oil analysis. I may just go ahead pull the pan and change the rod and main bearings before the crank is damaged. New pump and gears at the same time. It does not burn any oil so i may just stop there.

Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2844568
12/22/12 07:17 PM
12/22/12 07:17 PM
Joined: Sep 2005
Posts: 14,360
Canada
addyguy Offline
addyguy  Offline
Joined: Sep 2005
Posts: 14,360
Canada
Like Rob Roy said, the Amsoil is just cleaning up deposits over the years, I wouldn't panic, I'd just go to a 10W-30 or 15W40 HDEO, and do some short changes.

Don't short-change the engine by planning a rebuild or replacement, if it runs well it will last years. My dad got around 150k miles out of a 1967 289 Mustang as a DD throught the 1970's, and it was driven hard.


2010 Kia Soul 2U - 2.0L I-4, auto; 137k miles.
M1 EP 10W-30; OEM Kia filter.
Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: addyguy] #2845699
12/23/12 08:30 PM
12/23/12 08:30 PM
Joined: Dec 2012
Posts: 19
New York/Va/Fla
52pu Offline OP
52pu  Offline OP
Joined: Dec 2012
Posts: 19
New York/Va/Fla
I am aware that Synthetics loosen up deposits. However in this case there were excessive metals visible in the dino oil I drained before changing over to Sny. I'll run it awhile and change out the filter and drain some out of the sump when its cold before testing again. Thanks everyone.

Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: 52pu] #2846328
12/24/12 12:39 PM
12/24/12 12:39 PM
Joined: Apr 2008
Posts: 37,914
Ontario, Canada
OVERKILL Online content
OVERKILL  Online Content
Joined: Apr 2008
Posts: 37,914
Ontario, Canada
A cheaper option for you, and may actually involve less effort is to find a late model roller 302 (87-95 Mustang, 96-2002 Explorer) and swap your intake, distributor....etc onto it. You could run an electric fuel pump or swap your old timing cover on to retain the mechanical one.

You'll make more power, get the superior HO firing order, and get a roller cam and lifters for your efforts.


2018 RAM 1500 Big Horn EcoDiesel
2016 Grand Cherokee SRT
Re: 10w40 Amsoil & 66 Mustang 289ci engine analysis [Re: OVERKILL] #4485843
08/11/17 02:13 PM
08/11/17 02:13 PM
Joined: Dec 2012
Posts: 19
New York/Va/Fla
52pu Offline OP
52pu  Offline OP
Joined: Dec 2012
Posts: 19
New York/Va/Fla
I just sold the car to the Germans. Flow masters sealed the deal.

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