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#3350815 - 04/23/14 07:04 AM 1978 Ford LTD 351M QSGB 10w-30 2800 miles
SS1970chrysler Offline


Registered: 05/01/11
Posts: 1353
Loc: PA
351M V8 2bbl/auto- 34,700 miles
Fill- QSGB 10w-30
Duration- 2800 miles (1 year)
qts added- 0

"We found a lot of fuel in the previous sample from this LTD, but that cleared up nicely this time; the flashpoint was high enough to show no significant fuel dilution. It's a bit surprising, then, that the viscosity stayed as low as it did in this report, since we thought last time that the fuel dilution was the most likely cause for the lower viscosity. This sample also saw an increase in iron, showing more wear at steel parts, although at least lead (from bearings) didn't go any higher. All in all, no real improvements, but not
that much worse either. Check back next oil."

Aluminum- 6
Chromium- 1
Iron- 78
Copper- 4
Lead- 24
Tin- 2
Molybdenum- 109
Nickel- 0
Manganese- 1
Silver- 0
Titanium- 0
Potassium- 7
Boron- 45
Silicon- 10
Sodium- 10
Calcium- 1979
Magnesium- 13
Phosphorus- 816
Zinc- 880
Barium- 1

SUS visc@ 210F- 53.8
CST visc@ 100C- 8.42
Flashpoint in F- 410
Fuel%- <0.5
Antifreeze%- 0
Water%- o
Insolubles%-0.2
_________________________
93 Towncar- Rotella T-30+M.Craft
93 CrownVic- QSGB 10w-30+M.Craft
78 LTD- S.Pro XHD30+Bosch

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#3350884 - 04/23/14 08:40 AM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
Chris142 Offline


Registered: 06/05/03
Posts: 14852
Loc: apple valley, ca
you should start your own iron mine!im thinking that your losing a cam lobe,was pretty common in the late 70's from the big 3. have you tried a 15w40?
_________________________
02 Wrangler super-s 10w30
87 F250 proline 15w40
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Z400 Lucas 10w30
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#3351195 - 04/23/14 03:01 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
snowflake Offline


Registered: 12/29/12
Posts: 104
Loc: New Mexico
aside from your wear metals the oil's actual additive package looks pretty good.

How is the car operated?

Thank you for posting, don't see a lot on the oldies smile


Edited by snowflake (04/23/14 03:03 PM)
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89 F150 5.0
89 Isuzu Amigo (complete overhaul this winter!)

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#3351438 - 04/23/14 08:28 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
salv Offline


Registered: 04/21/11
Posts: 1259
Loc: Cadyville, NY
I think Delo 15w40 may be a nice choice for this vehicle. If you would like to stay with a PCMO, step up to a 10w40.
_________________________
2003 Trailblazer: Mobil Super HM 5w30 L25288
2000 Ford Focus Wagon: Mobil Super 5000 DW-5230

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#3351631 - 04/24/14 02:57 AM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
Merkava_4 Offline


Registered: 01/30/07
Posts: 15487
Loc: Clovis, CA
That engine desperately wants thicker oil.

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#3351703 - 04/24/14 06:43 AM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
SS1970chrysler Offline


Registered: 05/01/11
Posts: 1353
Loc: PA
This one's my mother's car and she only drives it about 3 miles to work and back. I've used a 50/50 of leftover QS defy 10w-30 and Service Pro XHD30 for the new fill.
_________________________
93 Towncar- Rotella T-30+M.Craft
93 CrownVic- QSGB 10w-30+M.Craft
78 LTD- S.Pro XHD30+Bosch

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#3352080 - 04/24/14 04:06 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
vintageant Offline


Registered: 10/27/06
Posts: 353
Loc: Florida, USA
Agree with others. Diesel 15/40, CI, if you can find, is preferable over CJ
_________________________
1925 Alvis HDEO 15W40
1937 Alvis Speed 25 HDEO 15W40 w LM MoS2
1970 VW Peking - Paris Rally Beetle HDEO 15W40 w LM MoS2
1987 Porsche 924S HDEO 15W40

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#3352195 - 04/24/14 07:24 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
fdcg27 Offline


Registered: 09/25/09
Posts: 13285
Loc: OH
This doesn't look good, but we have nothing to compare it with.
It may be that all old Ford 351s (C,M or W) shed metals like this.
Good to see a post from you, though.
Haven't seen that much of you since the epic Granada thread.
_________________________
12 Accord LX 61K HGMO 0W-20
09 Forester 67K PU 5W-30
02 Accord 144K GOil 5W-30
01 Focus ZX3 112K M1 5W-20
95 BMW 318iC 159K Delvac 15W-40

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#3352306 - 04/24/14 09:05 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
aquariuscsm Offline


Registered: 12/30/06
Posts: 15148
Loc: South Texas,USA
Wonder how well a classic car formula 20W50 would do?
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1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Syntec 10W40/Fram Ultra
Amsoil MTG(tranny)
Amsoil 80W90 GL5(rear diff)
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#3352376 - 04/24/14 10:20 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: aquariuscsm]
Merkava_4 Offline


Registered: 01/30/07
Posts: 15487
Loc: Clovis, CA
A 20W-50 would do wonders for that Ford. My 1978 Cadillac loved Exxon 20W-50.

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#3352517 - 04/25/14 07:17 AM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: SS1970chrysler]
bigt61 Offline


Registered: 02/12/13
Posts: 2827
Loc: Virginia
Haha - a 36 year old car with 30k miles and you guys freak over 78ppm iron? Man, at that rate, it may not make it another 36 years and 30k miles. Better switch to some Pure GTL Super Synthetic Hi Tri Nuclear Moly Wonder oil to keep this beast alive! Funny stuff - run a jug of SuperTech 10W-30 (or whatever else you have laying around for the last decade) in it every few years and call it a day.
_________________________
92 Suburban 2500 7.4L 58k M1_0w40 5yr OCI
99 Olds Aurora 4.0L 91K M1_5w30 5yr OCI
13 Dodge Dart 2.0L 29k PP 0w20 OLM OCI
70 Camaro 5.7L 59k

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#3352788 - 04/25/14 11:53 AM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: Merkava_4]
Garak Offline


Registered: 12/05/09
Posts: 20660
Loc: Regina, Saskatchewan, Canada
Originally Posted By: Merkava_4
A 20W-50 would do wonders for that Ford. My 1978 Cadillac loved Exxon 20W-50.

With his mom's short trips, 20w-50 would be pointless. The three mile trips are the biggest danger this engine is facing.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Baldwin B1402
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#3353291 - 04/25/14 08:11 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: Garak]
Merkava_4 Offline


Registered: 01/30/07
Posts: 15487
Loc: Clovis, CA
Originally Posted By: Garak
With his mom's short trips, 20w-50 would be pointless. The three mile trips are the biggest danger this engine is facing.


That engine needs thicker oil at all temps; from startup all the way to whatever the oil temp is at the end of three miles. If there was a way to get engine assembly lube in there between the lifters and the cam lobes at every startup, that would be ideal. 20W-50 would be an excellent match for that old Detroit iron.

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#3353315 - 04/25/14 08:35 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: Merkava_4]
Garak Offline


Registered: 12/05/09
Posts: 20660
Loc: Regina, Saskatchewan, Canada
But even a 0w-20 would be thicker in those three miles than a 20w-50 would be at operating temperature. wink 20w-50 isn't a good match for much of anything, unless something is worn out to high heaven.
_________________________
Plain, simple Garak.

2008 Infiniti G37 coupe - Mobil Delvac 1 ESP 5w-40, Baldwin B1402
1984 F-150 4.9L six - Quaker State GB 10w-30, Wix 51515

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#3353478 - 04/25/14 11:29 PM Re: 1978 Ford LTD 351M QSGB 10w-30 2800 miles [Re: Garak]
Merkava_4 Offline


Registered: 01/30/07
Posts: 15487
Loc: Clovis, CA
Originally Posted By: Garak
20w-50 isn't a good match for much of anything, unless something is worn out to high heaven.


It was an excellent match for my Dad's Cadillac DeVille with the 7.0L V8. The engine ran much smoother and quieter on Superflo 20W-50 than it did on VWB 10W-30. The engine wasn't worn out either, it only had 15K on it after a rebuild. It ran so quiet on 20W-50, all I could hear was the air being sucked into the carburetor and the fan belts going around. Add that sound with a very slight gurgle exhaust note from that beautiful V8 and it was music to my ears. The car would lay a patch of rubber 25ft long on the pavement ... and that was with stock 2:73 gears. I miss that car dearly.

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