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Re: Severe service? [Re: dave1251] #5186581 08/14/19 05:56 AM
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BigShug681 Offline
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Originally Posted by dave1251
Originally Posted by blupupher
Stick with 5w-20 and 5,000 miles, why, because my opinion matters as much as everyone elses (not much at all).

Seriously, seems a lot of thin hate lately with absolutely no proof of any issues with it.
And the argument that "it was originally spec'ed for 5w-30" is not a valid argument, maybe engineers found that 5w-20 is a better oil for it (since 5w-20 was not around in abundance when the 4.6 modular was designed). And yes, CAFE played a part in it, but not all. I am still looking for the millions of 2v modular motors with engine failure due to 5w-20 being used.



This engine and engine family gets 5W20 on cheapo bulk in fleet use and the idle time in the desert is a lot more than the OP is stating for his vehicle. Then to top it off they are then immediately thrown into WOT after hours of idle.


I worked at a prison for a little over a year and we had a few crown Vic’s that were used to patrol the perimeter of the complex, 24 hours a day they idled around, never exceeding 5 mph and never shut off not even during refueling, I’m unsure what oil they used but in my time there they only put around 600 miles on them


2006 F350 DRW 6.0 PSD with a ZF6 6Speed. If you can't find it or float it then just grind it
Re: Severe service? [Re: mrjlube] #5186617 08/14/19 06:43 AM
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billt460 Offline
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Originally Posted by mrjlube
Hi guys,im running Motorcraft 5w20 in my grand marquis at 5,000 intervals. I am using the car for my job as a Private driver and car sits idling for 2,3 hrs. at a time 3 or 4 times a week.

Translate that into miles. Both my newer Jeep and Toyota barely turn 1,200 to 1,400 RPM at a steady 40 MPH. So your engine is effectively turning at idle about half of that, (650-700 RPM). Yeah, it's not under a load, but there really isn't much load rolling down a flat, level road at 40 MPH either.

The hour meter is a very good suggestion. I would go with that due to the amount of idling your engine is experiencing. A lot of cop cars and taxi's use them, as do boats. Many cars already have them. My Jeep has a total hour meter associated with the trip odometer. It's amazing how slow your average speed is, when you incorporate the hours the engine runs into the equation.

Re: Severe service? [Re: billt460] #5186629 08/14/19 07:14 AM
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demarpaint Offline
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Originally Posted by billt460


The hour meter is a very good suggestion. I would go with that due to the amount of idling your engine is experiencing. A lot of cop cars and taxi's use them, as do boats. Many cars already have them. My Jeep has a total hour meter associated with the trip odometer. It's amazing how slow your average speed is, when you incorporate the hours the engine runs into the equation.

My Jeeps have that hour meter. I did the math a few times with my wife's Liberty, the average speed is sickening. IIRC is was under 20 mph. You gotta love Long Island and the NY Metropolitan area.


God Bless Our Troops

Re: Severe service? [Re: mrjlube] #5186651 08/14/19 07:43 AM
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Falcon_LS Offline
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If memory serves me right, 1 hour of idling is equal to 33 miles according to Ford. If you're idling 3 hours a time, 4 times a week that is 396 miles.

Where you are, I would run an xW-30 meeting ACEA A3/B4, or even an xW-40 HDEO if you want to switch.


Petro-Canada Duron HP 15W-40 CK-4/SN
99 Explorer: H17W02
00 Pajero: XG9688
01 Grand Marquis: XG2
05 Envoy: XG9837

Motorcraft 5W-50:
18 Mustang GT: XG10575
Re: Severe service? [Re: Nitronoise] #5186727 08/14/19 09:03 AM
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mrjlube Offline OP
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Wow,that's a lot of idle time for some...wow.

Last edited by mrjlube; 08/14/19 09:15 AM.

2017 Ford Escape ...ValvolineSynthetic 5w20

2009 kymco xciting 500...amsoil scooter oil...10w40

2001 Honda civic 5 speed 1.7.....Valvoline Maxlife 5w30
Re: Severe service? [Re: mrjlube] #5186733 08/14/19 09:05 AM
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mrjlube Offline OP
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So much great info. Thank you all. I will switch it to a full synthetic in 5w20 and stick with the 5,000. Time for a trip to Walmart.


2017 Ford Escape ...ValvolineSynthetic 5w20

2009 kymco xciting 500...amsoil scooter oil...10w40

2001 Honda civic 5 speed 1.7.....Valvoline Maxlife 5w30
Re: Severe service? [Re: mrjlube] #5186748 08/14/19 09:16 AM
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mrjlube Offline OP
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Joined: Sep 2005
Posts: 188
Im in Michigan,those who asked.


2017 Ford Escape ...ValvolineSynthetic 5w20

2009 kymco xciting 500...amsoil scooter oil...10w40

2001 Honda civic 5 speed 1.7.....Valvoline Maxlife 5w30
Re: Severe service? [Re: mrjlube] #5187061 08/14/19 02:41 PM
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Linctex Offline
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At only 5,000 miles (not hard to do with this Venerable 4.6 liter engine) -

I'd skip synthetic and just use what ever is cheap or rebate for 5,000 miles.

No synthetic needed at all.
.
.

Where did you find a 2004 Panther body with only 24,000 miles on it?!?!!?!?
.
.
.
.
.


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Severe service? [Re: Linctex] #5187117 08/14/19 03:52 PM
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mrjlube Offline OP
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My local paper is where I found it. Some guy whos dad had passed and it was driven to church on sundays and sat in his garage.


2017 Ford Escape ...ValvolineSynthetic 5w20

2009 kymco xciting 500...amsoil scooter oil...10w40

2001 Honda civic 5 speed 1.7.....Valvoline Maxlife 5w30
Re: Severe service? [Re: BigShug681] #5187132 08/14/19 04:18 PM
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Posts: 2,235
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wtd Offline
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Originally Posted by BigShug681

Originally Posted by dave1251
Originally Posted by blupupher
Stick with 5w-20 and 5,000 miles, why, because my opinion matters as much as everyone elses (not much at all).

Seriously, seems a lot of thin hate lately with absolutely no proof of any issues with it.
And the argument that "it was originally spec'ed for 5w-30" is not a valid argument, maybe engineers found that 5w-20 is a better oil for it (since 5w-20 was not around in abundance when the 4.6 modular was designed). And yes, CAFE played a part in it, but not all. I am still looking for the millions of 2v modular motors with engine failure due to 5w-20 being used.



This engine and engine family gets 5W20 on cheapo bulk in fleet use and the idle time in the desert is a lot more than the OP is stating for his vehicle. Then to top it off they are then immediately thrown into WOT after hours of idle.


I worked at a prison for a little over a year and we had a few crown Vic’s that were used to patrol the perimeter of the complex, 24 hours a day they idled around, never exceeding 5 mph and never shut off not even during refueling, I’m unsure what oil they used but in my time there they only put around 600 miles on them

I worked at a prison for almost 26 years until I retired and our perimeter vehicles used recycled oil and they ran slowly or idled 24/7 except when they were taken off line for maintenance or repairs and I don't remember any of the vehicles ever having engine trouble. We did run some crown vics but mostly full size pickup trucks. I don't know what viscosity they ran though.


2014 Mustang GT
1998 Chevy K3500
1998 Chevy K1500
(2) 1992 Cavaliers
1970 Monte Carlo
Re: Severe service? [Re: mrjlube] #5188101 08/15/19 04:53 PM
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JLTD Offline
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Originally Posted by mrjlube
My local paper is where I found it. Some guy whos dad had passed and it was driven to church on sundays and sat in his garage.


Wow what a great find!


I use the overseas manual to choose my oil viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 149k, SS5w30/Amsoil

His: 2015 4Runner 55k, SS 5w20/Amsoil

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