Is it safe to run a trip with a 1 year old oil? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

J95 · 07-17-2021, 05:41 AM

Hello!

I will do the 2 year maintenance next week. Today has been exactly 1 year since my last oil change (5w30), and I drove only 3,2k miles (rushing quite a lot though).

I have today a 0,7 miles trip (highway) and I am a bit worried about if I should use another car or it is completely fine to drive my car with 1 year old oil

I know some of you have done some oil testing after you oil changes, maybe you can tell me some thoughts about if

gkubed · 07-17-2021, 09:54 AM

You are absolutely fine driving on that oil. Good on you for playing it safe.

soundman98 · 07-17-2021, 09:56 AM

if the levels still correct, it'll be fine.

Tcoat · 07-17-2021, 07:55 PM

Synthetic oils break down due to use not time. It is entirely possible that the new oil they put in could be older than the old oil they take out. There is no shelf life.
All will be fine.

humfrz · 07-18-2021, 03:29 AM

Quote:

Originally Posted by Tcoat

Synthetic oils break down due to use not time. It is entirely possible that the new oil they put in could be older than the old oil they take out. There is no shelf life.
All will be fine.

Oh, really -

Grady · 07-18-2021, 09:54 AM

The calendar time on oil changes is for corrosion not oil break down. Driving it will help evaporate any moisture that has built up in the engine.

Tcoat · 07-18-2021, 10:29 AM

Quote:

Originally Posted by humfrz

Oh, really -

Not synthetic

Capt Spaulding · 07-18-2021, 11:17 AM

Quote:

Originally Posted by humfrz

Oh, really -

That stuff may contain live dinosaurs.

soundman98 · 07-18-2021, 11:35 AM

Quote:

Originally Posted by Capt Spaulding

That stuff may contain live dinosaurs.

A Tooth in Every Bottle!

humfrz · 07-18-2021, 05:33 PM

Quote:

Originally Posted by Tcoat

Not synthetic

humfrz · 07-18-2021, 05:39 PM

Quote:

Originally Posted by Capt Spaulding

That stuff may contain live dinosaurs.

Yep, the dinosaur parts could have clogged up the crankcase oil screens -

Tcoat · 07-18-2021, 06:55 PM

Quote:

Originally Posted by humfrz

Ummmm no. It is not an opinion it is a fact.

humfrz · 07-18-2021, 09:22 PM

Quote:

Originally Posted by Tcoat

Ummmm no. It is not an opinion it is a fact.

Oh, OK.

I suggest you study up on the chemistry (including shelf life) of synthetic motor oils (don't forget to take into account the additives).

J95 · 07-19-2021, 09:21 AM

Thank you everyone for the answers! All clear now

07-17-2021, 05:41 AM	#1
J95 Senior Member Join Date: Dec 2018 Drives: BRZ Location: ES Posts: 116 Thanks: 200 Thanked 17 Times in 15 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Is it safe to run a trip with a 1 year old oil? Hello! I will do the 2 year maintenance next week. Today has been exactly 1 year since my last oil change (5w30), and I drove only 3,2k miles (rushing quite a lot though). I have today a 0,7 miles trip (highway) and I am a bit worried about if I should use another car or it is completely fine to drive my car with 1 year old oil I know some of you have done some oil testing after you oil changes, maybe you can tell me some thoughts about if

07-17-2021, 09:56 AM	#3
soundman98 ProCrastinationConsultant Join Date: Sep 2013 Drives: '14 Ranger, '18 Tacoma 4Dr LB Location: chicago-ish Posts: 11,330 Thanks: 35,240 Thanked 13,675 Times in 6,782 Posts Mentioned: 98 Post(s) Tagged: 0 Thread(s)	if the levels still correct, it'll be fine. __________________ "The time you enjoy wasting is not wasted time"

07-17-2021, 07:55 PM	#4
Tcoat Senior Member Join Date: Jul 2014 Drives: 2020 Hakone Location: London, Ont Posts: 69,841 Thanks: 61,656 Thanked 108,294 Times in 46,456 Posts Mentioned: 2499 Post(s) Tagged: 50 Thread(s)	Synthetic oils break down due to use not time. It is entirely possible that the new oil they put in could be older than the old oil they take out. There is no shelf life. All will be fine. __________________ Racecar spelled backwards is Racecar, because Racecar.

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07-19-2021, 09:21 AM	#14
J95 Senior Member Join Date: Dec 2018 Drives: BRZ Location: ES Posts: 116 Thanks: 200 Thanked 17 Times in 15 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Thank you everyone for the answers! All clear now

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