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#4779026 - 06/06/18 11:51 AM Stick with an engine oil brand?
ECUADOR4X4 Offline


Registered: 06/21/16
Posts: 17
Loc: Ecuador
Hi, i've heard that is not a good practice to change brand in oil changes, its better to stick with a brand in the long term? Since additives and detergents are differents in every brand, or its ok to change brand every once in a while as long as you put the right viscosity for your car?

Thanks

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#4779044 - 06/06/18 12:05 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
oldhp Offline


Registered: 06/28/12
Posts: 1686
Loc: USA
I've never used just one oil forever. Changing oil for over 40 years I have never had any bad things happen. Engines have always been very clean either looking down oil fill or when i have pulled the valves covers.
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#4779050 - 06/06/18 12:08 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
SirTanon Offline


Registered: 06/23/14
Posts: 2340
Loc: Phoenix, Arizona - USA
What you have heard is not correct. It's perfectly fine to change brands from oil change to oil change. In fact, technically, it's even fine to mix different brands and weights together in the same oil change, although if you mix oils with substantially different add packs, you may find that they 'compete' with each other to some degree.

I change my oil roughly every 7,500 miles, which for me works out to roughly every 3 to 3.5 months. I have a stash of all different brands and weights of oil, and I rarely use the same stuff from one change to the other. In fact, I even sometimes mix two different brands in a single oil change, depending on what I have.. although I do try to use oils with similar add packs when I do this. Many people on here do similar, and you'll occasionally see people posting their 'frankenbrew' UOA results showing good wear numbers.

Switch away, if you want.
_________________________
2010 Ford Fusion SE - 2.5 liter/6F35 Trans - 260,000mi
2014 Nissan Altima SL - 2.5 liter/CVT - 55,000mi

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#4779070 - 06/06/18 12:23 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 3008
Loc: Wet side WA
Forget that nonsense and buy what's on sale with a rebate.
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2004 Corolla 123741
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: Castrol EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74202
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18

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#4779072 - 06/06/18 12:25 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
supton Offline


Registered: 11/09/08
Posts: 12319
Loc: NH
I've thought about deliberately switching brands in my '99. It has some varnish. Might the different oils react in different ways and slowly strip off the varnish? Dunno.

But if it was a real problem, we'd have proof plenty that it was an issue. We'd have stickers under the hood "use only Havoline!" or somesuch. We'd hear stories about so and so who bought a car and then had a motor problem right after an oil change (or in short order). Instead I'd wager the odds are very good that every used car changed oil brands every time it changed hands--and most of them motor on just fine.
_________________________
2011 Toyota Camry, base, 2.5L/6MT, 163k, hers
2010 Toyota Tundra DC, 4.6L/6AT, 144k, ours
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#4779087 - 06/06/18 12:32 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
dwendt44 Offline


Registered: 05/17/06
Posts: 3992
Loc: Central Wisconsin
Oil brands change formula over time in any case
so it is fine to change brands or even from conventional
to blend to synthetic or back again.

Most brands use similar additives though amounts
vary.

My 2
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#4779093 - 06/06/18 12:42 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
Eddie Online   sleepy


Registered: 12/07/03
Posts: 9724
Loc: Florida, Cape Coral
I believe in picking a quality brand oil and sticking with it throughout my time with the engine. There are many instances posted on this site where when using a different brand, that oil consumption increases for the first oil change. That suggests that the difference in oil properties is causing a mini break-in. That is good enough reason for me to stick with one oil unless it is causing some issues. Ed
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#4779104 - 06/06/18 12:52 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
PandaBear Offline


Registered: 08/05/02
Posts: 14372
Loc: Silicon Valley
Brands change formula all the time. Different brand of the same time period are more similar to each other than same brand across a long period of time.
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"You keep asking questions PandaBear and you'll end up a vegetarian like my wife" - Camu Mahubah

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#4779106 - 06/06/18 12:55 PM Re: Stick with an engine oil brand? [Re: Eddie]
SirTanon Offline


Registered: 06/23/14
Posts: 2340
Loc: Phoenix, Arizona - USA
Originally Posted By: Eddie
I believe in picking a quality brand oil and sticking with it throughout my time with the engine. There are many instances posted on this site where when using a different brand, that oil consumption increases for the first oil change. That suggests that the difference in oil properties is causing a mini break-in. That is good enough reason for me to stick with one oil unless it is causing some issues. Ed


... Or the new oil is doing a little cleaning of the buildup that the old oil left behind or was unable to clean because of similar additive chemistry.

I am a firm believer that using the same oil in an engine all the time can lead to a buildup of varnish that the oil can't clean because its detergent pack doesn't have what is needed... but changing to an oil with a different detergent pack might be able to clean. I have no proof of this, however.
_________________________
2010 Ford Fusion SE - 2.5 liter/6F35 Trans - 260,000mi
2014 Nissan Altima SL - 2.5 liter/CVT - 55,000mi

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#4779108 - 06/06/18 01:00 PM Re: Stick with an engine oil brand? [Re: SirTanon]
bbhero Offline


Registered: 03/20/15
Posts: 4813
Loc: Virginia
^^^^^^^^^

I like the way you think about this. Though I don't have any proof either LOL

I do this with gasoline though. Now running Exxon. Had been running Shell for a good while.
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#4779130 - 06/06/18 01:24 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
WylieCoyote Online   content


Registered: 06/08/16
Posts: 249
Loc: Texas, USA
I rotate through the usual Walmart "synthetics". At any given time, you'll see jugs of Mobil 1, PP and Valvoline in my garage. I've never had an issue.

I also rotate through Shell, Chevron, Exxon and QuickTrip when I fill the tank, I guess in the hopes that there is enough variance between their additives to keep everything as clean as possible. I could be wasting my time, though.

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#4779138 - 06/06/18 01:32 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
Schmoe Offline


Registered: 05/12/03
Posts: 7293
Loc: Oklahoma
I stick with one brand and one weight for everything, mowers/boats included, that way I'm not confused as to what to buy....M1 EP 5W-30.
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#4779215 - 06/06/18 02:36 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
dave1251 Offline


Registered: 07/15/05
Posts: 8710
Loc: Maricopa, AZ
Nothing would be gained.
_________________________
make the inside of your engine oil cap white.
don't use.

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#4779219 - 06/06/18 02:38 PM Re: Stick with an engine oil brand? [Re: Schmoe]
CincyDavid Offline


Registered: 03/03/16
Posts: 733
Loc: Cincinnati, OH USA
Originally Posted By: Schmoe
I stick with one brand and one weight for everything, mowers/boats included, that way I'm not confused as to what to buy....M1 EP 5W-30.


Wish I could do that...4 vehicles, 3 types of oil. 5w20 of different flavors for the Kia, bulk 0w20 synth for the Hondas and 5w40 Castrol Edge Professional from the dealer for the VW.
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14 Honda Accord LX metallic black
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#4779228 - 06/06/18 02:44 PM Re: Stick with an engine oil brand? [Re: ECUADOR4X4]
tig1 Online   content


Registered: 01/03/09
Posts: 13761
Loc: Illinois
It's been M1 oils for 40 years.
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2007 Ford Fusion 230,000 miles
M1 0-20 EP
2017 Ford Fusion 53K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters


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