"Free" Toyota Care oil changes in my 2012 are done. Synthetic or conventional oil? - Toyota Yaris Forums

fnkngrv · 06-11-2014, 02:30 PM

If you are looking for the best answer it would be to follow what the oil and filter manufacturers recommend with the following caveat:

Every engine uses and consumes oil differently. A certain engine size/model/type has a general manufacturer's suggested interval however the only proper way is to have an independent oil analysis performed at the suggested interval end point. This would be the best way for you to determine when you need to change.

LOOKING AT, FEELING, AND SMELLING OIL IS NOT A VALID WAY TO DETERMINE IF IT IS STILL GOOD OR DIRTY!

That being said do a search here for oil analysis and you should find some good information. Hersey for example is a senior OG member and he has done several as far as I am aware. If you are that concerned than making best guess judgements won't cut it. I am an Independent T-1 Certified AMSOIL Dealer so I have seen a lot of scenarios.

I will leave it at that. Good luck and if you wish to pick my brain more feel free to shoot me a PM.

Sent from my SCH-I545 using Tapatalk

Rigaud · 06-11-2014, 03:34 PM

Quote:

Originally Posted by fnkngrv

If you are looking for the best answer it would be to follow what the oil and filter manufacturers recommend with the following caveat:

Every engine uses and consumes oil differently. A certain engine size/model/type has a general manufacturer's suggested interval however the only proper way is to have an independent oil analysis performed at the suggested interval end point. This would be the best way for you to determine when you need to change.

LOOKING AT, FEELING, AND SMELLING OIL IS NOT A VALID WAY TO DETERMINE IF IT IS STILL GOOD OR DIRTY!

That being said do a search here for oil analysis and you should find some good information. Hersey for example is a senior OG member and he has done several as far as I am aware. If you are that concerned than making best guess judgements won't cut it. I am an Independent T-1 Certified AMSOIL Dealer so I have seen a lot of scenarios.

I will leave it at that. Good luck and if you wish to pick my brain more feel free to shoot me a PM.

Sent from my SCH-I545 using Tapatalk

trunkout · 06-11-2014, 05:15 PM

Quote:

Originally Posted by fnkngrv

LOOKING AT, FEELING, AND SMELLING OIL IS NOT A VALID WAY TO DETERMINE IF IT IS STILL GOOD OR DIRTY!

so if I look at my Mobil 1 Full Synthetic oil BRAND NEW and oil that I used for 10k miles in a glass and they look IDENTICAL that is NO indication???

nookandcrannycar · 06-11-2014, 05:41 PM

What Exiwolfman and roxy1 wrote yesterday

.

fnkngrv · 06-11-2014, 05:53 PM

Quote:

Originally Posted by trunkout

so if I look at my Mobil 1 Full Synthetic oil BRAND NEW and oil that I used for 10k miles in a glass and they look IDENTICAL that is NO indication???

Well I don't know about you but my eyes cannot detect things at a molecular level.

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UberSilver · 06-11-2014, 09:53 PM

Quote:

Originally Posted by trunkout

so if I look at my Mobil 1 Full Synthetic oil BRAND NEW and oil that I used for 10k miles in a glass and they look IDENTICAL that is NO indication???

That seems a bit far fetched. When I change mine once per year, it's too clear too see on the dipstick when new. At at 10k it's still Yellow, but visible on the stick.

Also, did you do a taste test? Mine taste like Lime when new, but by 10k miles it's got a Lemon favor to it.

06-11-2014, 02:30 PM	#1
fnkngrv Mr. 155 and climbing View User's Garage Drives: Seriously Modded 07 Sedan Join Date: Jun 2006 Location: In The Hotbox Posts: 4,742	If you are looking for the best answer it would be to follow what the oil and filter manufacturers recommend with the following caveat: Every engine uses and consumes oil differently. A certain engine size/model/type has a general manufacturer's suggested interval however the only proper way is to have an independent oil analysis performed at the suggested interval end point. This would be the best way for you to determine when you need to change. LOOKING AT, FEELING, AND SMELLING OIL IS NOT A VALID WAY TO DETERMINE IF IT IS STILL GOOD OR DIRTY! That being said do a search here for oil analysis and you should find some good information. Hersey for example is a senior OG member and he has done several as far as I am aware. If you are that concerned than making best guess judgements won't cut it. I am an Independent T-1 Certified AMSOIL Dealer so I have seen a lot of scenarios. I will leave it at that. Good luck and if you wish to pick my brain more feel free to shoot me a PM. Sent from my SCH-I545 using Tapatalk __________________ Team Tiamat Racing on Facebook Youtube Channel: Team Tiamat Racing *Class record holder in Land Speed @ 154.5mph for 1.5 mile and 145.5mph in the mile in the F (2.016 to 3.014 L), G (1.524 to 2.015 L), and H (1.016 to 1.523 L) classes.*

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nookandcrannycar Drives: 2('14+'07)MT 3d ,wHandCrWndws! Join Date: May 2009 Location: S.MontgomeryCnty,TX(HoustonMSA) '07=BayouBlue=300,125miles=OrigOwnr '14=ClassicSilvr=29,059miles Posts: 4,839	What Exiwolfman and roxy1 wrote yesterday .