oil weight - 2003-04 Mach 1 Registry Owners Club

liv2roc · 09-28-2014, 06:27 PM

I was thinking of running a little thicker oil in my mach. I bought it with 77k on it and have always run motorcraft 5w 20 blend. it has 99k on it and would like to go to 10w 30. anyone running that on a stock engine with 100k without problems? it has and always has had sense I had it the engine tick in the #7 cylinder but has not got any worst sense I had it but dont want it to get worst by changing different oil.

01yellerCobra · 09-28-2014, 07:02 PM

If it ain't broke don't fix it.

not a gt · 09-28-2014, 07:15 PM

Quote:

Originally Posted by 01yellerCobra

If it ain't broke don't fix it.

Agree, I am at 135,000 miles and have ONLY used 5W20 in her

USMCWeatherMan · 09-28-2014, 07:49 PM

I bought mine with 36k on it, and always used 5w20 MC up until last oil change when with about 66k on it, I switched to 5w30 Mobil 1 Synthetic

iamkevin7 · 09-28-2014, 10:08 PM

Penzoil Platinum 5-30 works for me in the Mach and the Mini S. Tried royal purple in the Mach and it was scary . Lots of rattle on start and burn off ,1 qt per 2k miles. I have no usage with Pennzoil.

I use Wix filters because if they can keep a fleet of diesels alive at work then they can do just fine on our motors. We bought a newer 2009 IH bucket truck at my part time job and they sent a bunch of pics of critical things on the chassis and boom. One of them was a pic of the underside of the whole truck and it showed a Fram oil filter on the engine. I told the boss that he shouldn't take delivery of it unless that Fram filter was changed out to an acceptable filter like Wix ,Baldwin or IH . They put a Baldwin on it for the 500 mile delivery drive LOL.

DSG2003Mach1 · 09-28-2014, 10:09 PM

after reading a few things Ive gone to 5W-30.

01yellerCobra · 09-28-2014, 10:28 PM

Quote:

Originally Posted by DSG2003Mach1

after reading a few things Ive gone to 5W-30.

That's what I run in mine.

not a gt · 09-29-2014, 12:21 AM

Quote:

Originally Posted by DSG2003Mach1

after reading a few things Ive gone to 5W-30.

'''and I JUST changed mine...will be in there at LEAST 5K miles, which will be about a year lol
I freakin forgot about the 5W30 discussion..da**

stang8092 · 09-29-2014, 08:22 AM

I just switched to 5w30 MC.

Mach828 · 09-29-2014, 10:48 AM

I'm running a 5w50 5w40 blend this oil change. There was a deal on the Castrol synthetic at autozone I couldn't pass up.

mach1metalhead · 09-29-2014, 11:03 AM

I'm running 10-30, I have for the last couple changes. It's running great, oil comes out clean (dark, but no flakes), and no noises. Might be a small decline in MPG (according to Cali), but I daily drive a performance car... mpg was never in the cards...

ab_mach1 · 09-29-2014, 01:05 PM

I'm running Royal Purple 5w-20. I tried a change with 5w-30 last summer, but chickened out this year. I'm sure there's no issue with 5w-30, but I just got to reading oil pump failures (not due to oil) and it scared me about the robustness of the Mach oil pumps, so I switched back to the lighter weight. I haven't experienced any issues with RP such as what you mentioned. I generally get the K&N oil filter, but sometimes use the Motorcraft long life one too.

BADNBLUE · 10-03-2014, 05:55 PM

I run 5-30 mobil one syn as instructed by ford rep who came out to look at the install of my na aluminator at rod baker ford in Plainfield

.

Explosive · 10-06-2014, 11:19 AM

5W30 Amsoil here

djmanny · 10-06-2014, 12:53 PM

I run 10-40 synthetic with 125,000 miles no issues at all and im running e85 on a bolt on tune set up

4a7191a · 10-06-2014, 05:34 PM

5w40 rotella t6 synthetic oil here

ab_mach1 · 10-06-2014, 06:32 PM

Quote:

Originally Posted by 4a7191a

5w40 rotella t6 synthetic oil here

Isn't that a hazel nut spread

not a gt · 10-06-2014, 10:32 PM

Quote:

Originally Posted by eruza

Isn't that a hazel nut spread

LMAO

na svt · 10-09-2014, 07:57 AM

10 weight oil is not recommended for these engines due to the lash adjusters requiring oil that is thinner.5-20 is great for excellent fuel mileage but not so much for reducing wear. 5-30 is much better for wear protection but the -40 and -50 will mess with the lash adjusters.

DSG2003Mach1 · 10-09-2014, 08:13 AM

^^^ Id probably listen to that guy

tad240 · 10-16-2014, 10:38 PM

Quote:

Originally Posted by na svt

but the -40 and -50 will mess with the lash adjusters.

NA, please explain. Do they pump up to the point of keeping the valve off the seat / zero lash. Does it cause more of a problem at low or high rpms? Increase potential for piston to valve interference?

I've seen so many opinions on oil and would really appreciate any details you can give.

I like to do some HPDE track days and keep the engine rev'd up for an extended period of time. What oil would you recommend?

4a7191a · 10-17-2014, 02:14 AM

Quote:

Originally Posted by eruza

Isn't that a hazel nut spread

Its worked great so far.

Run it in my lightning and Evo too. Actually a lot of import guys and Shelby owners making big power run it.

Mach828 · 10-17-2014, 09:29 AM

Mine has 60k miles of hell with -40 and the top end of the motor is fine.

sspstangbanger · 10-17-2014, 10:24 AM

My truck has 270k+ on original 4.6l and it has had M/C Syn Blend and M/C filters its whole life since new. It has always ran 10-30 winter 10-40 summer

09-28-2014, 07:02 PM	#2
01yellerCobra Registered User Join Date: Jan 2013 Location: San Diego, CA Posts: 1,104	If it ain't broke don't fix it. __________________ New Ride: 2004 Mystichrome Cobra-Accufab SBTB and plenum, Steeda 2.8" upper, Bassani X, Borla Stingers, Mcleod RXT, MGW shifter, Level 5 halfshafts, chrome FR500's, Stiffler's FIT system and DS safety loop, GT pumps, BA3000, tuned by owner

09-28-2014, 07:49 PM	#4
USMCWeatherMan Registered User Join Date: Nov 2008 Location: Haymarket, VA Posts: 532	Re: oil weight I bought mine with 36k on it, and always used 5w20 MC up until last oil change when with about 66k on it, I switched to 5w30 Mobil 1 Synthetic

09-28-2014, 10:08 PM	#5
iamkevin7 Registered User Join Date: Feb 2014 Location: Monroe NC Posts: 120	Re: oil weight Penzoil Platinum 5-30 works for me in the Mach and the Mini S. Tried royal purple in the Mach and it was scary . Lots of rattle on start and burn off ,1 qt per 2k miles. I have no usage with Pennzoil. I use Wix filters because if they can keep a fleet of diesels alive at work then they can do just fine on our motors. We bought a newer 2009 IH bucket truck at my part time job and they sent a bunch of pics of critical things on the chassis and boom. One of them was a pic of the underside of the whole truck and it showed a Fram oil filter on the engine. I told the boss that he shouldn't take delivery of it unless that Fram filter was changed out to an acceptable filter like Wix ,Baldwin or IH . They put a Baldwin on it for the 500 mile delivery drive LOL.

09-28-2014, 10:09 PM	#6
DSG2003Mach1 700 HP Mach Join Date: Nov 2003 Location: Orlando, FL Posts: 8,384	Re: oil weight after reading a few things Ive gone to 5W-30. __________________ 03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater

09-29-2014, 08:22 AM	#9
stang8092 Registered User Join Date: Jul 2011 Location: Chicopee, MA Posts: 498	Re: oil weight I just switched to 5w30 MC. __________________ '03 AB Mach 1 (x2), '87 Saleen #223, '92 s/c Saleen clone, '80 Mustang

09-29-2014, 10:48 AM	#10
Mach828 Dark Knight Join Date: Nov 2009 Location: Albuquerque, NM Posts: 5,759	Re: oil weight I'm running a 5w50 5w40 blend this oil change. There was a deal on the Castrol synthetic at autozone I couldn't pass up. __________________ Vortech V2 S-trim, E85, A2A Treadstone, Comp cams, built engine, full exhaust, built rear, built 4r70, more mods. Tuned by me with SCT Advantage

09-29-2014, 11:03 AM	#11
mach1metalhead Registered User Join Date: Oct 2007 Location: Orlando, FL Posts: 1,065	I'm running 10-30, I have for the last couple changes. It's running great, oil comes out clean (dark, but no flakes), and no noises. Might be a small decline in MPG (according to Cali), but I daily drive a performance car... mpg was never in the cards... __________________ 03 Mach (Auto) JLT RAI - 1/2" Intake Spacer - Mac longtubes - Mac Prochamber - Borla cat-back - PA Racing k-member - Energy Suspension motor mounts - Eibach Sportline springs - Eibach anti-roll kit - SPC caster/camber kit - Steeda X2 ball-joints - Steeda strut tower bar - Eibach 1" wheel spacers (rear only)

09-29-2014, 01:05 PM	#12
ab_mach1 Lorraine's driver Join Date: Apr 2012 Location: Indianapolis, IN Posts: 2,442	Re: oil weight I'm running Royal Purple 5w-20. I tried a change with 5w-30 last summer, but chickened out this year. I'm sure there's no issue with 5w-30, but I just got to reading oil pump failures (not due to oil) and it scared me about the robustness of the Mach oil pumps, so I switched back to the lighter weight. I haven't experienced any issues with RP such as what you mentioned. I generally get the K&N oil filter, but sometimes use the Motorcraft long life one too. __________________ Instagram: @azurblumach1 SCT X3 with LaSota Racing tune Borla Stingers w/JBA off road H pipe MGW short shifter w/comfort handle Eibach Sportlines w/Koni STR.T's and Maximum Motorsports CC plates

10-03-2014, 05:55 PM	#13
BADNBLUE Registered User Join Date: Oct 2003 Location: Joliet, IL Posts: 412	Re: oil weight I run 5-30 mobil one syn as instructed by ford rep who came out to look at the install of my na aluminator at rod baker ford in Plainfield. __________________ gone but not forgotten:03 AB MACH1 stock ,99 GT nos,cai,tb,exhaust,b&mproripper 4.10s 05,00,and a 98vett ,03 cobra 475rwhp! 99TA 99formula, 88notch, 93lightning 94formula, all with way 2 many mods! CURRENT RIDES:03 zinc yellow mach1 not stock anymore!

10-06-2014, 11:19 AM	#14
Explosive Registered User Join Date: Jul 2010 Location: Michigan Posts: 876	Re: oil weight 5W30 Amsoil here

10-06-2014, 12:53 PM	#15
djmanny 2v 04 cobra? Join Date: May 2012 Location: miami, fl Posts: 206	Re: oil weight I run 10-40 synthetic with 125,000 miles no issues at all and im running e85 on a bolt on tune set up __________________ Daily: Azure blue Auto Mach 1 305 RWHP, 325 RWTQ Race Car: 04 2V Cobra <---- yes a 2v 520 RWHP, 680 RWTQ Built lightning motor on low boost

10-06-2014, 05:34 PM	#16
4a7191a Registered User Join Date: Jun 2004 Location: beaumont texas Posts: 1,344	Re: oil weight 5w40 rotella t6 synthetic oil here __________________ 2004white mach1 2001 svt lightning 2011 Mitsubishi Evo X 1999 F250 7.3L

10-09-2014, 07:57 AM	#19
na svt Registered User Join Date: Dec 2007 Location: beavercreek, oh Posts: 4,695	Re: oil weight 10 weight oil is not recommended for these engines due to the lash adjusters requiring oil that is thinner.5-20 is great for excellent fuel mileage but not so much for reducing wear. 5-30 is much better for wear protection but the -40 and -50 will mess with the lash adjusters.

10-09-2014, 08:13 AM	#20
DSG2003Mach1 700 HP Mach Join Date: Nov 2003 Location: Orlando, FL Posts: 8,384	Re: oil weight ^^^ Id probably listen to that guy __________________ 03 dsg mach1 - MPR built 9.5:1 motor, D1, cams, ported intake, full exhaust, magnum t56, built rear, E85 etc... '12 F150 FX2 Supercrew with Ecoboost daily beater

10-17-2014, 09:29 AM	#23
Mach828 Dark Knight Join Date: Nov 2009 Location: Albuquerque, NM Posts: 5,759	Re: oil weight Mine has 60k miles of hell with -40 and the top end of the motor is fine. __________________ Vortech V2 S-trim, E85, A2A Treadstone, Comp cams, built engine, full exhaust, built rear, built 4r70, more mods. Tuned by me with SCT Advantage

10-17-2014, 10:24 AM	#24
sspstangbanger Registered User Join Date: Sep 2009 Location: Plantersville, TX Posts: 354	My truck has 270k+ on original 4.6l and it has had M/C Syn Blend and M/C filters its whole life since new. It has always ran 10-30 winter 10-40 summer

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