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#3329489 - 03/31/14 06:34 PM Help! The wrong oil was used!
Mantachieman Offline

Registered: 10/30/13
Posts: 5
Loc: Mantachie, Ms
Hey Guys! I'm new on here. Well... I'm a member, but have just been lurking around researching. Lol. This is what's just happened... I work at a Ford Dealership, and this morning I asked the guy in the service department to rotate my tires. He said they would do a rotation, and also check my car over to insure everything was ok with it. So while he was looking my car over, he noticed according to the sticker that my oil hadn't been changed in a little over 10k miles. I told him that was my plan since I used synthetic Mobil 1, and that I was changing it this weekend. I told him I had the oil in the 'back' of the car, and that if he didn't mind, to get it out and just go ahead and change it for me. (It was up on the lift anyways getting its rotation, so why not? It would save me from having to do it myself. Lol) Anyways, he happily obliged... About 10 mins after my car was taken into the service department, he paged me on my desk phone. He said that I had mistakenly purchased the incorrect viscosity that my car requires, but he would throw me in some SynBlend Motorcraft 5w20 from the bulk tank. I declined the offer and assured him that after doing research online(BITOG), it was completely safe for my car to use the oil I had purchased, and that it was actually the same type of oil I was currently using in the engine for its 10k oci. He honored my decision and completed the Oil Change and rotation for me. Well as I was driving to get lunch on my break, I looked in the rearview mirror and noticed the M1 AFE 0w20 oil that I had bought for my car was still sitting it the backseat... Confused, I cut my Lunch break short and drove straight back to the service department. I asked why he had went against my wishes and used the Motorcraft instead of the M1 that I asked him to use. He looked at me with a weird look, and reached into the garbage pulling out the empty M1 jug that was previously 'IN MY TRUNK'!!! I had COMPLETELY forgotten about having oil in my trunk!!! The oil in the TRUNK was meant for my 2001 Explorer SportTrac! It of course wasn't 0w20 AFE, but rather M1 5w30 Extended Performance! He assumed that when I said "Back of the car" I was implying the 'trunk' not 'backseat', and that's why he asked if I was sure it was safe for my engine to use. When he told me this morning it wasn't the correct viscosity, I was assuming he was talking about it being 0w and not 5w. duh It was completely my fault, as I should have been more specific of the intended oils' location inside of my vehicle. It was an honest mistake and could have been avoided if I would have just taken the oil out myself... So I guess what my question is... Can I just go ahead and keep the oil that was mistakenly put in (M1 5w30 Extended Performance), or should I change it out this weekend with the M1 0w20 I've been using? It wasn't cheap oil... So if it is safe and not gonna blow my engine, I'm completely fine with using it for this oci. But if it is going to cause harm, I will hang my head and change it Sunday. I've driven it about 20 miles so far today, and can't tell any difference in performance at all. If anything, at idle it seems smoother and a little quieter during hard acceleration. Could just be me though... I know for one week it's not going to have a problem running 30w... But over 10k miles is what I am concerned over. Any input is appreciated. I guess as ticky as I am about my vehicles, I want to be sure I'm not killing them. Lol. Thank again guys.

Oh btw! My car is a 2010 Lincoln MKZ with the 3.5 Duratec and has 50,7xx miles on it.

#3329496 - 03/31/14 06:41 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
Lead Shoes Offline

Registered: 03/03/10
Posts: 2435
Loc: Mn
Leave it, the warmer months are coming... your motor will be fine.
1992 325i BMW 183k
1999 BMW M3 98k
2x Castrol 0w40/Mahle

#3329497 - 03/31/14 06:42 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
actionstan Offline

Registered: 05/22/13
Posts: 488
Loc: Ohio
You're fine, the 5w30 wont hurt a thing, in a lot of cars that use 5w20, in the owners manual it will recommend 5w30 if 5w20 is not available. Besides both oils are a 5 weight at start up, the 5w30 is just thicker at operating temps.

In fact.. My Kia is speced for 5w20, but the Meijer where I like to buy my oil mainly caries 5w30 and 10w30 in the major brands. So in the near future I think my Kia will be getting 5w30 exclusively

Edited by actionstan (03/31/14 06:43 PM)
1999 Saturn SL1
2013 KIA Forte

#3329502 - 03/31/14 06:42 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
lawman1909 Offline

Registered: 03/20/14
Posts: 677
Loc: USA
I'd say you are fine. I am not the kind to switch up the "0w" and "5w". I would change it just because I'm not gonna risk it but it SHOULD be fine.
2014 Honda CR-V AWD LX
M1 0W-20 EP/Fram Ultra 7317
Bless all LEO's, Fire, EMS, and military personnel both active and retired. USA! USA!

#3329511 - 03/31/14 06:46 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
Errtt Offline

Registered: 11/14/10
Posts: 2724
Loc: California
I'd run it just fine. Matter of fact, my DD vehicle specs 5w-20 on the fill cap. I'm running 5w-30 now like I did during the warmer season last year and it hasn't blown up yet.

#3329512 - 03/31/14 06:47 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
71Chevyguy Offline

Registered: 07/10/11
Posts: 413
Loc: Martinsburg West Virginia
I wouldn't worry about it one bit, and with the weather getting warm now it really won't make any difference. I would switch back to the correct viscosity next time but don't lose any sleep over it being in there for this OCI. My mom had a Ford Five Hundred and I used to switch back and forth between 5w20 and 5w30 in it depending on what was next on the shelf. Only difference on 5w30 was that it was quieter as you have noticed as well. It didn't care one bit. The Duratec is a very good engine and the M1 is a very good oil. I am sure they spec heavier oils than that in the same engine in other countries.
15 Chevy Sonic RS M1 Dexos1 / Delco filter
99 VW Beetle TDI M1TDT / Mann filter
98 Buick LeSabre PHM + G oil / Bosch filter
85 Skylark 2.5
71 Nova 250

#3329514 - 03/31/14 06:49 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
Greggy_D Online   content

Registered: 03/03/05
Posts: 1622
Loc: Michigan
Just to add to the above're fine.
Greggy D.

#3329516 - 03/31/14 06:50 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
dave1251 Offline

Registered: 07/15/05
Posts: 8403
Loc: Maricopa, AZ
Your engine will be fine for the OCI. Hope this will give you some peace.
make the inside of your engine oil cap white.
don't use.

#3329519 - 03/31/14 06:51 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
fdcg27 Offline

Registered: 09/25/09
Posts: 14690
Loc: OH
I usually leave my oil stash in the garage, rather than carry it around with me.
You live in MS, where it isn't that cold now and it's getting warmer by the day.
The EP 5W-30 is thinner at your current cold start ambients then was the highish VI Idemitsu 0W-20 in my '12 Accord on the dark mornings of last winter.
Run it 10K until your fall change and then use the AFE.
No harm done.
Kudos to the tech for having pointed out that the oil he thought you wanted him to use was not the recommended grade.
17 Forester 6K M1 AFE 0W20
12 Accord LX 78K M1 AFE 0W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

#3329520 - 03/31/14 06:51 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
bdcardinal Online   content

Registered: 06/03/05
Posts: 10315
Loc: Santa Barbara, CA
I am gonna say you should be fine. Just run it for your regular OCI and then change back at the next oil change.
2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.

#3329534 - 03/31/14 07:07 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
tinmanSC Offline

Registered: 09/07/10
Posts: 2231
Loc: Oswego, IL
Leave it. Nothing bad is going to happen because you used 5w30. Happens all the time. Carry on. smile
Cost of Hobby=2L
(Where L=Cost of Lubricant)
95 Lexus SC300 [email protected], 2000 [email protected] both VML Full Syn+Purolator PSL20195(soon to be Wix)

#3329553 - 03/31/14 07:26 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
Nick1994 Online   content

Registered: 02/19/13
Posts: 8973
Loc: Phoenix, AZ
Probably fine, if you took it to a Jiffy Lube or other place they probably would have put in 5w30 anyways
2015 Hyundai Sonata 2.4L 68k M1 AFE 0w30 & OEM
2000 Toyota Camry 2.2L 227k M1 AFE 0w30 & Wix
1996 Jeep Cherokee 4.0L 144k Napa 10w30 & Fram Ultra

#3329559 - 03/31/14 07:29 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
Barkleymut Offline

Registered: 01/27/04
Posts: 2689
Loc: Richmond, VA
Your engine will never make it till June.

just a perfect example of why u should always diy
09 Vue(95K) 2.4 4spd AT -PU 5w30 / 09 Flex(52K)3.5L PU / Moms car 04 Pilot(105K) 5w20 PP + Puro

#3329572 - 03/31/14 07:44 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
Mantachieman Offline

Registered: 10/30/13
Posts: 5
Loc: Mantachie, Ms
Thanks for all the help and quick reply guys! I feel better knowing I'm not actually hurting my car. I'll run it 10k with this oil and then switch back to 20w AFE oil. It won't take me long to put on 10k miles. Lol. I bought the car right before Thanksgiving with only 30k miles on it. Lol. So I've already put on 20k in just the last few months. I guess you could say I travel ALOT! Lol. My Lincoln sees 80% highway driving, so many of the miles are logged on long 70+ mph jaunts accross state lines. I usually average around 25-27 mpg on my long trips, and am curious as to how the 30w oil will do. My last car (12 Focus Titanium) averaged a beautiful 36 mpg! And that was on a diet of regular syn Mobil 1 5w20 for 7500 oci's. But with as many people as I take on these trips, a larger car was really needed for comfort. So after piling on almost 50k miles in one year on my Focus, I knew buying another new car just wasn't a smart financial move. So I traded it in for my current baby(10MKZ), since Lincoln's have a longer powertrain warranty than Fords do. Regaurdless of warranty this time though, I plan on putting atleast 100k on her and then giving it to my brother. He'll be moving to Washington in a few years to work at the Capitol, and I feel this car will serve him well up there. I guess it'll be sort of a law school graduation gift from ol' Bubba. Lol. Anyways, I'll keep y'all updated on the "Z's" economy with this 30w. Thanks again guys!

#3329573 - 03/31/14 07:44 PM Re: Help! The wrong oil was used! [Re: Mantachieman]
Hyde244 Offline

Registered: 12/29/12
Posts: 670
Loc: Ohio
Leave it - GM specced this exact same engine for their 2010 Impala's with 5w30. (3.5L V6 with VVT)

The only reason Ford opts for the 5w20 is to help improve their Cafe standard. 5w30 will still provide the protection you need for this application.
2007 Ford Focus ZX4 SES - 2.0L Duratec | 4F27E Auto | 92,000 miles
PU 5w20 | MC 910 | Castrol Mercon V

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