10k miles between oil change - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

8RZ · 02-28-2018, 09:01 PM

I decided to sacrifice my car (for science) and see how a UOA looks at 10k m.

I’ve always been a fan of Mobil 1, my last Miata was at 265k m before I sold it and still had great compression numbers.

I’m pleasantly surprised on how the FA20 with M1 did. Blackstone Labs even recommends stretching it out to 12k, which I probably won’t do and will go back to changing it every 8k again. It’s just nice to see that the oil is still healthy and doing it’s job beyond 10k m.

Whiskerz · 02-28-2018, 09:12 PM

Good to know, thanks for sharing

StraightOuttaCanadaEh · 02-28-2018, 09:55 PM

Wonder where all that magnesium is coming from

mav1178 · 02-28-2018, 10:21 PM

Quote:

Originally Posted by StraightOuttaCanadaEh

Wonder where all that magnesium is coming from

Oil additive in Mobil 1.

My ENEOS Sustina for comparison.

http://www.ft86club.com/forums/showp...5&postcount=77

I wanted to stretch mine to over 10k as well, but I simply was not putting enough "normal" miles on the engine.

Somerandom18 · 02-28-2018, 10:23 PM

Impressed by the fuel percentage... Expected higher from a high compression engine. We have have some good rings.

Sent from my Pixel XL using Tapatalk

humfrz · 03-01-2018, 12:05 AM

Quote:

Originally Posted by 8RZ

I decided to sacrifice my car (for science) and see how a UOA looks at 10k m.

]

Ahhhh.........go for 20,000 ...... for science .......

humfrz

8RZ · 03-01-2018, 08:02 AM

Quote:

Originally Posted by Somerandom18

Impressed by the fuel percentage... Expected higher from a high compression engine. We have have some good rings.

Sure is an improvement over the EJ lol.

Quote:

Originally Posted by humfrz

Ahhhh.........go for 20,000 ...... for science .......

humfrz

Challenge accepted!

Mazikowski · 03-01-2018, 09:41 AM

I stretched my last oil change out to 10k mi as well and got similar results. I'm planning on dialing it back to around 7.5-8k though since past that I saw a noticeable drop in fuel economy.

Here's the report with the numbers from my past few changes. All of these have been with Valvoline SynPower 0W-20, fwiw.

8RZ · 03-01-2018, 02:50 PM

Quote:

Originally Posted by Mazikowski

I stretched my last oil change out to 10k mi as well and got similar results. I'm planning on dialing it back to around 7.5-8k though since past that I saw a noticeable drop in fuel economy.

Here's the report with the numbers from my past few changes. All of these have been with Valvoline SynPower 0W-20, fwiw.

Very nice, thanks for sharing. I'm glad to see how great modern engines and oils are. That's why my mom's Porsche only requires 1 oil change a year.

OfficeWorker · 03-01-2018, 10:05 PM

Those look good!

Teseo · 03-01-2018, 11:09 PM

Anyone have a report but with motul?

Kaotic Lazagna · 03-02-2018, 06:34 AM

I was changing mine every 15k with Amsoil and their oil filter. I'm dialing it back to 2k miles or less now since I don't daily it anymore.

Tcoat · 03-02-2018, 02:12 PM

Quote:

Originally Posted by Mazikowski

I stretched my last oil change out to 10k mi as well and got similar results. I'm planning on dialing it back to around 7.5-8k though since past that I saw a noticeable drop in fuel economy.

Here's the report with the numbers from my past few changes. All of these have been with Valvoline SynPower 0W-20, fwiw.

LOL I enjoyed the "keep up the good work" closing line. Like getting all As on a report card.

Teseo · 03-02-2018, 03:27 PM

Quote:

Originally Posted by Kaotic Lazagna

I was changing mine every 15k with Amsoil and their oil filter. I'm dialing it back to 2k miles or less now since I don't daily it anymore.

Mate, thats is a overkill. If you use 0w-20 you are good, i would be worried about battery

02-28-2018, 09:01 PM	#1
8RZ The Gunshine State Join Date: Aug 2016 Drives: '14 BRZ Limited Location: Florida Posts: 1,463 Thanks: 631 Thanked 1,163 Times in 587 Posts Mentioned: 9 Post(s)	10k miles between oil change I decided to sacrifice my car (for science) and see how a UOA looks at 10k m. I’ve always been a fan of Mobil 1, my last Miata was at 265k m before I sold it and still had great compression numbers. I’m pleasantly surprised on how the FA20 with M1 did. Blackstone Labs even recommends stretching it out to 12k, which I probably won’t do and will go back to changing it every 8k again. It’s just nice to see that the oil is still healthy and doing it’s job beyond 10k m. __________________ Current DD: M235i

02-28-2018, 09:55 PM	#3
StraightOuttaCanadaEh Wes Join Date: Feb 2017 Drives: Artisan Spirits '17 86 Location: Toronto Posts: 2,874 Thanks: 1,259 Thanked 1,737 Times in 1,028 Posts Mentioned: 21 Post(s)	Wonder where all that magnesium is coming from __________________ Instagram: @gt86ws

03-01-2018, 09:41 AM	#8
Mazikowski Senior Member Join Date: Sep 2012 Drives: 2013 GBS BRZ Limited Location: Huntsville, AL Posts: 107 Thanks: 40 Thanked 49 Times in 27 Posts Mentioned: 4 Post(s)	I stretched my last oil change out to 10k mi as well and got similar results. I'm planning on dialing it back to around 7.5-8k though since past that I saw a noticeable drop in fuel economy. Here's the report with the numbers from my past few changes. All of these have been with Valvoline SynPower 0W-20, fwiw. Attached Images

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02-28-2018, 09:12 PM	#2
Whiskerz Member Join Date: Jan 2018 Drives: 2014 86 GTS Location: Canberra, Australia Posts: 11 Thanks: 11 Thanked 1 Time in 1 Post Mentioned: 0 Post(s)	Good to know, thanks for sharing

02-28-2018, 10:23 PM	#5
Somerandom18 Senior Member Join Date: Sep 2016 Drives: 2017 manual BRZ Location: USA Posts: 467 Thanks: 322 Thanked 178 Times in 111 Posts Mentioned: 2 Post(s)	Impressed by the fuel percentage... Expected higher from a high compression engine. We have have some good rings. Sent from my Pixel XL using Tapatalk

03-01-2018, 10:05 PM	#10
OfficeWorker Senior Member Join Date: Feb 2018 Drives: 2018 WRX STI Location: Maryland Posts: 107 Thanks: 56 Thanked 49 Times in 37 Posts Mentioned: 0 Post(s)	Those look good!

03-01-2018, 11:09 PM	#11
Teseo Senior Member Join Date: Jun 2014 Drives: frs Location: Gunsai Posts: 4,960 Thanks: 7,502 Thanked 2,981 Times in 1,803 Posts Mentioned: 23 Post(s)	Anyone have a report but with motul?

03-02-2018, 06:34 AM	#12
Kaotic Lazagna Senior Member Join Date: Apr 2014 Drives: GR Corolla Location: Lathrop, CA Posts: 4,943 Thanks: 3,096 Thanked 3,028 Times in 1,865 Posts Mentioned: 40 Post(s)	I was changing mine every 15k with Amsoil and their oil filter. I'm dialing it back to 2k miles or less now since I don't daily it anymore.

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