Author
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Topic: oil concern
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KARATExxCHUCK
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Member # 12851
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posted
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
-------------------- **Sometimes you must kill the snake to walk the path!! **Message me for Powder Coating and Sand blasting!!!:)
Posts: 1286 | Registered: Apr 2013
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NK2186
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Member # 12319
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posted
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 ]
-------------------- 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: 400 | From: Haystack | Registered: Aug 2012
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90GT510
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Member # 9199
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posted
Castrol gtx ftmfw
5-30/10-30 motorcraft filter.
Posts: 1725 | From: East Bay/Dallas, TX | Registered: May 2009
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PonyBoy415
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Member # 13662
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posted
Mobil One Full Synthetic in my Focus all day everyday !!
-------------------- 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
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LXjames
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Member # 10791
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posted
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.
-------------------- On Point Motorsport prez. King Lx
Posts: 4761 | From: Pittsburg CA | Registered: Mar 2011
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Fostang
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Member # 3752
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posted
Worst that can happen is a spun rod. I've ran that diesel oil on older motors (flat tappet) without a hitch of problem.
-------------------- 67' Fastback TT 408 67' Camaro Lsx 64' Corvette Fuelie 57' Chevy Bel Air Lsx 68’ Pony Convertible 66’ Pony Coupe
Posts: 3012 | From: Stockton/Danville | Registered: Nov 2003
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kuku93
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Member # 14014
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posted
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
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NEIGHT
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Member # 8741
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posted
I've always used 10w30 on my foxes.
-------------------- -Savage Habits- 1992 Summer Edition 1986 Hatch- catfish killer 1964 Impala hard top
Posts: 18548 | From: EA$T $IDE REDWOOD CITY | Registered: Nov 2008
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SIC9250
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Member # 8216
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posted
15/40w is just fine enjoy the quite valvetrain 👍🏻
-------------------- Coyote_Mach1
Posts: 6959 | From: in the drivers seat. | Registered: Feb 2008
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Blind
2.3L CAFords OG
Member # 3052
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posted
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
-------------------- 89 LX Notchback ex 4cyl, 14psi 02 Harley F150, 15psi
Posts: 8521 | From: Fairfield | Registered: Jul 2003
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lubedealer
New Member
Member # 13499
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posted
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
Posts: 8 | From: stockton | Registered: Mar 2014
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lubedealer
New Member
Member # 13499
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posted
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
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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
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93mustang50
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Member # 6642
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posted
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 ]
-------------------- 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
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warhorse58gt
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Member # 7702
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posted
I run 15-40 full synthetic. Never had a issue. 8-9 years of 250+ passes a year. Still solid as day 1.
-------------------- 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: 4200 | From: 209 | Registered: Jun 2007
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Martinna
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Member # 12493
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posted
Switching to full synthetic on old gaskets is known to cause leaks. Use conventional oil.
Posts: 1093 | From: City | Registered: Oct 2012
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hurting your feelings
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Member # 13641
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posted
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
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lubedealer
New Member
Member # 13499
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posted
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
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Martinna
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Member # 12493
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posted
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
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SLOWSN95
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Member # 8269
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posted
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.
-------------------- 94' GT 347 Stroker MM Suspended
2003 SB SVT Lightning Pullied and Lowered
89'Hatch-SOLD
Posts: 2214 | From: 510/east bay | Registered: Mar 2008
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Martinna
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Member # 12493
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posted
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
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fredfifty
Since 9/2010
Member # 10320
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posted
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: 4953 | Registered: Sep 2010
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Martinna
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Member # 12493
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posted
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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