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3 off Crown Vic, 5W20, Las Vegas, 15,000 miles #4439026
06/22/17 10:40 PM
06/22/17 10:40 PM
Joined: Dec 2002
Posts: 40,825
'Stralia
Shannow Offline OP
Shannow  Offline OP
Joined: Dec 2002
Posts: 40,825
'Stralia
Per the title, 3 off Crown Vics
Taxi Service in Las Vegas
Operation under generally similar conditions.
No make-up needed to 3,000 miles.
1-2qts needed to get to 15,000 miles.



What say the UOA experts on the serviceability of these oils in these engines ?

Where did the Fe go ? (sludge???)

Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439037
06/22/17 10:49 PM
06/22/17 10:49 PM
Joined: Sep 2015
Posts: 3,861
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 3,861
Connecticut
Looks like 5K-7.5K miles is all the first 2 oils are really good for as TBN/TAN cross over. My 4.6 Lincoln gets 3K-4K/6 month oil changes, mostly because I don't drive it enough.

I would have expected better results from this fleet. Others have suggested that running oils past 3K miles only shows less and less wear as the miles are piled on, even as the viscosity thickens up considerably. These results don't seem to support that theory. Not a believer in 5w-20 for the 4.6 Lincoln/Crown Vic/Grand Marquis engines. I've had several of them now, all running 5w-30 as originally specced from 1993-2000. Las Vegas is HOT too where that extra viscosity couldn't hurt any.


----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439051
06/22/17 11:10 PM
06/22/17 11:10 PM
Joined: Jun 2003
Posts: 17,335
Deplorable in apple valley, ca
Chris142 Offline
Chris142  Offline
Joined: Jun 2003
Posts: 17,335
Deplorable in apple valley, ca
Try a 10w30


02 Wrangler durablend 10w40
87 F250 traveler 15w40
04 Tahoe super-s 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor 15w40
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: 69GTX] #4439054
06/22/17 11:14 PM
06/22/17 11:14 PM
Joined: Dec 2002
Posts: 40,825
'Stralia
Shannow Offline OP
Shannow  Offline OP
Joined: Dec 2002
Posts: 40,825
'Stralia
Originally Posted By: 69GTX
Others have suggested that running oils past 3K miles only shows less and less wear as the miles are piled on, even as the viscosity thickens up considerably. These results don't seem to support that theory.


Just as a heads up...these ARE the three cars in the cam/lifter produces less wear study.

Clearly there's a difference between a bench cam/lifter study on a benchtop, and what was ACTUALLY going on the the engines that the oil was obtained from.

Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439071
06/22/17 11:49 PM
06/22/17 11:49 PM
Joined: Sep 2015
Posts: 3,861
Connecticut
69GTX Offline
69GTX  Offline
Joined: Sep 2015
Posts: 3,861
Connecticut
Thanks for that heads up Shannow.


----------------

2001 Lincoln Cont 4.6L DOHC/ 39K mi / QS HM 5w30 / FUG XG2
1999 Camaro SS M6 /19K /Mobil 1 0w40 /Fram UG /GM MTL-ATF
1969 Ply GTX/RRs
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439092
06/23/17 12:45 AM
06/23/17 12:45 AM
Joined: Mar 2016
Posts: 1,225
CA
CharlieBauer Offline
CharlieBauer  Offline
Joined: Mar 2016
Posts: 1,225
CA
Looks like the constant Las Vegas heat is oxidizing the oil in taxi service. They've all thickened out of grade between 5,000 and 7,500 miles, and TBN never reaches a number that on it's own suggests the oil needs changing. Only the TAN crossover indicates any issue on that front.

No idea how to interpret the wear metals. Do the high levels at 3,000 (and in one case higher) miles suggest wear metals in sludge areas are being liberated by the fresh oil?


It ain't what you don't know that gets you into trouble. It's what you know for sure that ain't so.

- mistakenly attributed to Mark Twain
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439102
06/23/17 01:17 AM
06/23/17 01:17 AM
Joined: Dec 2009
Posts: 25,355
Regina, Saskatchewan, Canada
Garak Offline
Garak  Offline
Joined: Dec 2009
Posts: 25,355
Regina, Saskatchewan, Canada
Viscosity ran nicely off the rails by the end. As I've mentioned many times, the taxis went always to 6,000 mile (10,000 km) OCIs with Quaker State conventional. On those engines that did need a new camshaft (wonderful Chevy small blocks), there was no sludging. We were able to go double the severe service OCI without penalty.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, NAPA Gold 7356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439245
06/23/17 08:47 AM
06/23/17 08:47 AM
Joined: Oct 2014
Posts: 11,816
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,816
Idaho
What does 3 off mean?


"Don't let your preconceived notions get in the way of facts."
Geoff Metcalf
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439265
06/23/17 09:15 AM
06/23/17 09:15 AM
Joined: Jun 2016
Posts: 2,955
MN
oil_film_movies Offline
oil_film_movies  Offline
Joined: Jun 2016
Posts: 2,955
MN
Reference Source? Where did these come from, and when? GF-3 and GF-4 are fossils.

Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: CharlieBauer] #4439274
06/23/17 09:21 AM
06/23/17 09:21 AM
Joined: Jun 2016
Posts: 2,955
MN
oil_film_movies Offline
oil_film_movies  Offline
Joined: Jun 2016
Posts: 2,955
MN
Originally Posted By: CharlieBauer
No idea how to interpret the wear metals. Do the high levels at 3,000 (and in one case higher) miles suggest wear metals in sludge areas are being liberated by the fresh oil?
Very strange Fe fluctuations. That should be cumulative, with NO oil change, right?????

And people keep talking about sludge in these Vegas vehicles in a warm climate where they almost never run cold. Very few cold cycles.
Pistons WPD would be the big issue, not sludge.

Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439309
06/23/17 09:59 AM
06/23/17 09:59 AM
Joined: Sep 2014
Posts: 2,086
US-WA
Dyusik Offline
Dyusik  Offline
Joined: Sep 2014
Posts: 2,086
US-WA
If not for tan 15k would be great. Agree that 10w30 would be much more linear and stand up to the service better. Maybe even the 15w30 are from Delo would be a good choice.


95 Cherokee 190K DELO 10W30,XG8
07 IS250 98K Napa 10w30,FULL
04 YZF-R1 19K DELO 15w40,XG7317
99 HD XL1200S 18K VR1 20w50,1515
14 RX450h 32k PP MIX,NAPAG
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: oil_film_movies] #4439311
06/23/17 10:01 AM
06/23/17 10:01 AM
Joined: Jan 2011
Posts: 549
Anaheim, CA
zorobabel Offline
zorobabel  Offline
Joined: Jan 2011
Posts: 549
Anaheim, CA
Originally Posted By: oil_film_movies

Pistons WPD would be the big issue, not sludge.

What's WPD?


1997 Maxima 181k, Edge 10w30, K&N HP-1003
2004 Corolla 191k, VWB 5w20 + SSS 10w40, MGL4967
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: zorobabel] #4439314
06/23/17 10:07 AM
06/23/17 10:07 AM
Joined: Jun 2016
Posts: 2,955
MN
oil_film_movies Offline
oil_film_movies  Offline
Joined: Jun 2016
Posts: 2,955
MN
Originally Posted By: zorobabel
Originally Posted By: oil_film_movies

Pistons WPD would be the big issue, not sludge.

What's WPD?
How much gunk collects near the rings on the pistons. Hot torture for oil. http://www.swri.org/sites/default/files/sequence-iiig-test.pdf

Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: oil_film_movies] #4439326
06/23/17 10:19 AM
06/23/17 10:19 AM
Joined: Jan 2011
Posts: 549
Anaheim, CA
zorobabel Offline
zorobabel  Offline
Joined: Jan 2011
Posts: 549
Anaheim, CA
Originally Posted By: oil_film_movies
Originally Posted By: zorobabel
Originally Posted By: oil_film_movies

Pistons WPD would be the big issue, not sludge.

What's WPD?
How much gunk collects near the rings on the pistons. Hot torture for oil. http://www.swri.org/sites/default/files/sequence-iiig-test.pdf

Thanks!


1997 Maxima 181k, Edge 10w30, K&N HP-1003
2004 Corolla 191k, VWB 5w20 + SSS 10w40, MGL4967
Re: 3 off Crown Vic, 5W20, Las Vegas, 15,000 miles [Re: Shannow] #4439329
06/23/17 10:24 AM
06/23/17 10:24 AM
Joined: Dec 2006
Posts: 429
snow and sun
oliveoil Offline
oliveoil  Offline
Joined: Dec 2006
Posts: 429
snow and sun
Syn oil? Or regular ?

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