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#4436843 - 06/20/17 03:13 PM From synthetic to regular oil
beeburrt Offline


Registered: 06/19/17
Posts: 1
Loc: Springville, UT
Hey y'all. I'm new here and this is my first post. I looked for a similar question and didn't see one so hopefully this hasn't already been asked.
I have a 2003 Toyota Tacoma with the 3.4 v6
I bought it from my dad and he had been running full synthetic in it.
When I got the truck I took it to the dealership for an oil change but I forgot to tell the guys there that I needed synthetic oil in it. So they did the oil change with regular oil and it wasn't until miles down the road when I realized my mistake.
So my question is: Will this hurt my motor? I figured it's too late so I don't plan on switching back but are there any suggestions on anything i can do to minimize harm?

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#4436845 - 06/20/17 03:18 PM Re: From synthetic to regular oil [Re: beeburrt]
Donald Offline


Registered: 03/21/04
Posts: 20468
Loc: Upstate NY
Welcome. There is a chance your engine will fall out in the first 50 miles. If it makes it past that, do the normal 5000 miles and change it to whatever you like.

If the owners manual says it requires synthetic, then I would change it to that soon. But its doubtful it does.


Edited by Donald (06/20/17 03:19 PM)
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#4436846 - 06/20/17 03:18 PM Re: From synthetic to regular oil [Re: beeburrt]
Lolvoguy Offline


Registered: 02/06/14
Posts: 2344
Loc: Canada
WWF
_________________________
06 Lexus IS350- Wife
88 BMW 325is- Mistress
03 Suzuki SV650S- One night stand

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#4436849 - 06/20/17 03:25 PM Re: From synthetic to regular oil [Re: beeburrt]
Virtus_Probi Offline


Registered: 06/25/15
Posts: 3970
Loc: New England
Should be no issue at all, even if Toyota recommended synthetic for that engine one change with conventional will likely be quite safe.
Synthetic and conventional oils can be mixed without issue, note that many manufacturers sell synthetic blends that are exactly such mixes.
Many quick change shop employees will swear that you can't run conventional after synthetic, but it's just not true...
_________________________
2014 Forester XT, 80500 miles
Last Change;
Valvoline Full Synthetic 5W30 d1G2
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#4436854 - 06/20/17 03:34 PM Re: From synthetic to regular oil [Re: Virtus_Probi]
JC1 Offline


Registered: 11/29/08
Posts: 3010
Loc: Oshawa, Ontario Canada
You'll be fine.
_________________________
2015 Grand Caravan SXT Plus 5w-20 PPPP/Wix Filter
1997 Honda Civic CX 5w-30 PPPP/Mahle Filter

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#4436871 - 06/20/17 03:55 PM Re: From synthetic to regular oil [Re: beeburrt]
Syntheticuser Offline


Registered: 06/11/17
Posts: 147
Loc: Waco, Tx.
Run it for 4k miles or so then change it. I would however, check the oil few times along the way. Don't be surprised if it uses some. Sometimes when you switch brands you may notice consumption. I would guess it has to do with additive changes. It usually settles down in a change or two. The inner me says oh Jesus, get that stuff out of there. Lol. I've been a synthetic fluids user since I started changing oil at 14, I'm 31 now.

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#4436901 - 06/20/17 04:33 PM Re: From synthetic to regular oil [Re: Syntheticuser]
Donald Offline


Registered: 03/21/04
Posts: 20468
Loc: Upstate NY
Originally Posted By: Syntheticuser
Run it for 4k miles or so then change it. I would however, check the oil few times along the way. Don't be surprised if it uses some. Sometimes when you switch brands you may notice consumption. I would guess it has to do with additive changes. It usually settles down in a change or two. The inner me says oh Jesus, get that stuff out of there. Lol. I've been a synthetic fluids user since I started changing oil at 14, I'm 31 now.


I have been using synthetic oil since 1976 when I got a real job. Before that I was college broke and used what oil my Dad had in cases.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#4436930 - 06/20/17 05:04 PM Re: From synthetic to regular oil [Re: beeburrt]
Rolla07 Offline


Registered: 11/05/11
Posts: 4737
Loc: MTL, CANADA
All good with conventional oil. Follow the oil change schedule per manual and you will be good for many, many miles. Pretty sure it was recommended to use conventional to start with.
_________________________
2007 Corolla Red Pearl 155k miles
PP 0w20 & ST 4967


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#4436942 - 06/20/17 05:11 PM Re: From synthetic to regular oil [Re: beeburrt]
Syntheticuser Offline


Registered: 06/11/17
Posts: 147
Loc: Waco, Tx.
Dang Donald, you are old! grin

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#4437029 - 06/20/17 07:13 PM Re: From synthetic to regular oil [Re: Syntheticuser]
Donald Offline


Registered: 03/21/04
Posts: 20468
Loc: Upstate NY
Originally Posted By: Syntheticuser
Dang Donald, you are old! grin


Yes, but my brother is always 2 years older than I except for a few months when he is 3 yrs.

But only as old as you feel. I still drag my butt under the cars to change oil myself.

Waiting until my wife has 30 yrs in with NYS then retire.

And syntheticuser, my younger daughter is older than you. Married with 2 kids.
_________________________
2015 Subaru Forester 2.5 engine/CVT
2015 Ford F250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)


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#4437051 - 06/20/17 07:56 PM Re: From synthetic to regular oil [Re: beeburrt]
BrocLuno Offline


Registered: 09/06/15
Posts: 5521
Loc: Kalifornia Kollective
Geez guys, I had my first real job in the 1960's ... You'all are all kids to me laugh

To the OP's question - all oils are blends. True synthetics do not mix well with most common additive packages, so the refiners have to have some dino oil as a carrier for the ad pak. That means even the most "synthetic" of the regularly store shelf oils are really blends.

In the last few years, Pennzoil Yellow Bottle (traditional, I know, they are all yellow now) was made form a high dose of GTL. Never advertised as such, but it was there for a long while as they ramped up and GTL oversupply. SO if you had gotten that as "regular oil" you would have actually gotten a pretty sophisticated syn-blend.

The bottom line is the motor will not care. Good oil is good oil. Dino, Syn, Blend - they all work.

Before we can really comment, you need to tell us what exact oil they used ...


Edited by BrocLuno (06/20/17 08:03 PM)
_________________________
Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.

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#4437062 - 06/20/17 08:03 PM Re: From synthetic to regular oil [Re: beeburrt]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18177
Loc: Dallas,Tx USA
I'm still a hot young stud at 48 laugh
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1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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