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» Northern California Ford Owners     » Automotive   » Tech Talk   » oil concern

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Author Topic: oil concern
KARATExxCHUCK
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I have a 92 mustang foxbody. My car calls for 5w30, but I have always ran 10w40. I wanted to run 10w40 full synthetic, but I could not decide on a brand because all I could find was 10w30 (not important). I picked up 3 gallons of 15w40 of chevron delo 400 oil, but I am beginning to have second thoughts. Is this oil for diesels? And can I run this in my car?

Charles [patriot]

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**Sometimes you must kill the snake to walk the path!!
**Message me for Powder Coating and Sand blasting!!!:)

Posts: 1246 | Registered: Apr 2013  |  :
NK2186
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15 40 is thick oil for diesel or high mileage engines. We steady run 15-40 in the e350 vans that come through my shop with 200 - 400k miles.

just use 10-30 or 5-30 conventional or synth dont matter. just keep it clean !

[ 2016-06-03, 06:50 PM: Message edited by: NK2186 ]

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90 LX 5.0 - Stolen/stripped
89 LX 5.0 - Stolen and missing as of 7-24-13. LIC# 4HIP151 :(
99 Cobra
00 Exploder

Posts: 395 | From: Haystack | Registered: Aug 2012  |  :
90GT510
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Castrol gtx ftmfw

5-30/10-30 motorcraft filter.

Posts: 1722 | From: East Bay/Dallas, TX | Registered: May 2009  |  :
PonyBoy415
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Member # 13662

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Mobil One Full Synthetic in my Focus all day everyday !!

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2013 GT500 Deep Impact Blue # 2878
2013 5.0 with TrackPack - Sold
2001 GT Convertible
2012 Focus SE MK3
1989 5.0 LX Convertible - Sold

Posts: 356 | From: San Francisco | Registered: Jul 2014  |  :
LXjames
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Delo supposedly has a lot of zinc and the thick oil is a good cushion for our higher mileage and abused 5.0 motors. You'll see good pressure but it is a little thick.

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On Point Motorsport prez.
King Lx

Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011  |  :
Fostang
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Worst that can happen is a spun rod. I've ran that diesel oil on older motors (flat tappet) without a hitch of problem.

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67' Fastback TT 408
67' Camaro Lsx
64' Corvette Fuelie
57' Chevy Bel Air Lsx
"Dream as if you'll live forever,Live as if you'll die today

Posts: 2981 | From: Stockton | Registered: Nov 2003  |  :
kuku93
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ive used mobile one full synthetic 10w-30 on my 87 for 3 years and still going to use it for my 347 stroker after its done. Best brand out there
Posts: 154 | Registered: Apr 2015  |  :
NEIGHT
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I've always used 10w30 on my foxes.

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-Savage Habits-
1992 Summer Edition
1986 Hatch- catfish killer
1964 Impala hard top

F*ck trump

Posts: 18269 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008  |  :
SIC9250
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15/40w is just fine enjoy the quite valvetrain 👍🏻

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03' DSG Mach 1
12' Black 5.0/MT82

Posts: 6916 | From: in the drivers seat. | Registered: Feb 2008  |  :
Blind
2.3L
CAFords OG
Member # 3052

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I ran castrol 20w50 convential in my wife's old `91 5.0 with a lot of miles, only stuff that would quiet the lifters lol

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89 LX Notchback ex 4cyl, 14psi
02 Harley F150, 15psi
14 Scooby FXT Touring, 17psi
17 GTI SE, 17psi

Posts: 8505 | From: (Socal) Camarillo | Registered: Jul 2003  |  :
lubedealer
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quote:
Originally posted by KARATExxCHUCK:
I have a 92 mustang foxbody. My car calls for 5w30, but I have always ran 10w40. I wanted to run 10w40 full synthetic, but I could not decide on a brand because all I could find was 10w30 (not important). I picked up 3 gallons of 15w40 of chevron delo 400 oil, but I am beginning to have second thoughts. Is this oil for diesels? And can I run this in my car?

Charles [patriot]


Posts: 8 | From: stockton | Registered: Mar 2014  |  :
lubedealer
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quote:
Originally posted by KARATExxCHUCK:
I have a 92 mustang foxbody. My car calls for 5w30, but I have always ran 10w40. I wanted to run 10w40 full synthetic, but I could not decide on a brand because all I could find was 10w30 (not important). I picked up 3 gallons of 15w40 of chevron delo 400 oil, but I am beginning to have second thoughts. Is this oil for diesels? And can I run this in my car?

Charles [patriot]

quote:

amsoil makes a 10w 40 full synthetic oil and it is a high zinc oil. you dont say much about your engine. 10w 30 would be my choice if car is not one that needs high zinc. been using amsoil for over 35 years and it has the market covered. we even have the new 5w 50 for the super ford power houses.
Posts: 8 | From: stockton | Registered: Mar 2014  |  :
93mustang50
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Rotella 15-40 for the win! I run it in everything I have. My dirt bikes, yamaha rhino, cummins truck, and my dd HCI fox....for years

[ 2016-07-08, 01:08 AM: Message edited by: 93mustang50 ]

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93GT 306 H/C/I supercharged
06 Cummins 6spd
90 GT 5sdp daily driver HCI
16 Hellcat Charger
91GT aod(sold)
88GT5spd(totaled)

Posts: 213 | From: Vacaville | Registered: Mar 2006  |  :
warhorse58gt
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I run 15-40 full synthetic. Never had a issue. 8-9 years of 250+ passes a year. Still solid as day 1. [patriot]

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WOLFPACK RACING

With guns, we are 'citizens'. Without them, we are 'subjects'.

83gt 354ci sbf 9.40 @ 143
77 cobra 2 171ci 97hp of pure fury!

Posts: 4196 | From: 209 | Registered: Jun 2007  |  :
Martinna
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Switching to full synthetic on old gaskets is known to cause leaks. Use conventional oil.
Posts: 1093 | From: City | Registered: Oct 2012  |  :
hurting your feelings
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quote:
Originally posted by Martinna:
Switching to full synthetic on old gaskets is known to cause leaks. Use conventional oil.

Talking out your ass again I see.
Posts: 1830 | From: In front of the bank with a 45 an a ski mask | Registered: Jun 2014  |  :
lubedealer
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quote:
Originally posted by Martinna:
Switching to full synthetic on old gaskets is known to cause leaks. Use conventional oil.

this is not true pertaning to gasket leaks. there was a problem attributed to seal leaking on either front crank or rear main seals. the problem actually was that build up of varnish or sludge was what was preventing an oil leak so when synthetic was used it removed the false seal you sometimes developed a leak. if vehicle has been properly serviced going to synthetic wont leak.
Posts: 8 | From: stockton | Registered: Mar 2014  |  :
Martinna
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lubedealer ----- but what 92 Mustang doesn't have a real main seal leak? It is a flawed design that always leaks. Synthetics only make a bad problem worse. Taxis, postal trucks and police cruisers always use conventional oil and run up over 300,000 miles regularly. The money spent pouring synthetic into your crank case should be spent pouring gasoline into your gas tank instead.
Posts: 1093 | From: City | Registered: Oct 2012  |  :
fredfifty
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searched and wondering why a rear main repair sleeve is not mentioned and used? shit, i just found out about using them smh...

https://lmr.com/item/LRS-6701RK/Redi-Sleeve-Rear-Main-Seal-Repair-Sleeve-Mustang-79-04

Posts: 4831 | Registered: Sep 2010  |  :
SLOWSN95
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Run some 15w-40 shell rotella. Cheap and has a higher zinc content. It’s technically a “heavy duty” oil as opposed to a diesel oil. I’ve run it in a few cars as well as my jet ski since I run it at 7-8k rpms for minutes at a time. Hasn’t given me a lick of trouble.

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94' GT
347 Stroker
MM Suspended

2003 SB SVT Lightning
Pullied and Lowered

89'Hatch-SOLD

Posts: 2192 | From: 510/east bay | Registered: Mar 2008  |  :
Martinna
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quote:
Originally posted by fredfifty:
searched and wondering why a rear main repair sleeve is not mentioned and used? shit, i just found out about using them smh...

https://lmr.com/item/LRS-6701RK/Redi-Sleeve-Rear-Main-Seal-Repair-Sleeve-Mustang-79-04

You need to buy the special tool to install a sleeve. You can sleeve a crank and run a factory style seal on 2004 and older V8s or use a Teflon seal with no sleeve. If you have a groove cut into your crank from a bad seal, you'll need a repair sleeve not to have leaks.
Posts: 1093 | From: City | Registered: Oct 2012  |  :
fredfifty
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9/2010
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quote:
Originally posted by Martinna:
quote:
Originally posted by fredfifty:
searched and wondering why a rear main repair sleeve is not mentioned and used? shit, i just found out about using them smh...

https://lmr.com/item/LRS-6701RK/Redi-Sleeve-Rear-Main-Seal-Repair-Sleeve-Mustang-79-04

You need to buy the special tool to install a sleeve. You can sleeve a crank and run a factory style seal on 2004 and older V8s or use a Teflon seal with no sleeve. If you have a groove cut into your crank from a bad seal, you'll need a repair sleeve not to have leaks.
that was my mistake, i did not use the teflon seal...i used the ford brand seal thinking it was better. damn.
Posts: 4831 | Registered: Sep 2010  |  :
Martinna
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On 1979 to 2004 Mustangs the crank needs to be cleaned of the old seal that has melted onto it. You need to scrape it off with brake cleaner and your finger nail or a plastic scraper. Don't use metal. Use a mirror and a flashlight to see if you've removed all of the old melted seal. Remains of the old seal left behind will cause a new seal to soon leak.
Posts: 1093 | From: City | Registered: Oct 2012  |  :


 
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