When to do your first oil change, and why...

[MrBodyMassage]

I've seen many on here recommending your first oil change at 1,000. I'm of the opinion that you should wait til 3,500-5,000 miles to do your first change. Here's why: The factory fill is 0w20 synthetic, so it's not dino oil. There may very well be small metallic shavings from break-in, but those all should be caught by the oil filter. The main reason to leave it in the recommended interval is this:

Analysis was done by Toromont Caterpillar ($CDN 20 including tax and shipping).

Iron 20
Chrome 0
Moly 974
Aluminum 5
Copper 83
Lead 0
Tin 1
Titanium 0
Nickel 0
Silver 0
Silicon 229
Sodium 9
Potassium 5
Zinc 918
Magnesium 13
Phosphorus 939
Barium 4

Soot UFM # 0
Sulfur UFM # 22
Oxidation UFM # 18
Nitrates UFM # 9

Viscosity cSt at 100C 7.15
TBN 5.0
TAN 1.10

Antifreeze negligible
Fuel Dilution negligible
Water negligible

The comment from Toromont was "Wear levels are consistent with normal break-in wear"

The above is an oil analysis done of a factory fill from a FB25 in a 2011 Subaru Forester. It was taken from http://www.bobistheoilguy.com/forums...Number=2251431.

What do these numbers mean? Basically the Moly, Zinc, and Phosphorus are higher than normal oils. This seems to be part of a stronger additives package put in to the factory fill.

From Idemitsu Lubricants of America in regards to an email about Subaru and Toyota 0W-20:

First, just so you know where the information is coming from, Idemitsu supplies most of the OEM’s for both Factory fill and service fill. In the case of Toyota, we do not supply their service fill oil so I cannot comment on that particular formulation.

OEMs specify Moly in their factory fill formulations to increase fuel economy during the initial period. In general a factory fill formula will be more robust in the additive treatments etc. This is done for a variety of reasons which I will not go into here.

Some of the service fill formulations also contained molybdenum however, with the transition to the ILSAC GF-5 specification, most 0W-20 service fill 0W-20 formulations now do not have Moly. That being said, you are always safest following the OEMs recommendations. All service fill OE formulas that we supply have been submitted to a full battery of tests at that respective OEM’s R&D facilities in Japan and have been approved.

Is this being super anal? Sure it is. That's why we're all on this website, specifically in this subforum

If you changed at 1,000 miles will you ever notice a difference? Probably not. I just posted this as food for thought.

[getbent]

Thats not too bad of a UOA, however after only 1400 miles its already a thin 20 weight oil.

Iron and Copper are already a bit high (due to break-in obviuosly).

How thin will the oil be and how many ppm will be in there at the 7500 mile recommended first oil change?

I would just assume get that stuff out of the engine.

Edit: I am interested in seeing more UOA's from our FA20 to see whether the DI has fuel dilution issues just as nearly every other DI engine does.

[jarviz]

I haven no idea what your post just said lol. I just got an oil change though at around 1600mph based on what other members have said regarding the metal shavings.

[Subie]

Originally Posted by jarviz

I haven no idea what your post just said lol. I just got an oil change though at around 1600mph based on what other members have said regarding the metal shavings.

Whoa that's fast!

[YukiHachiRoku]

Well, with scions complimentary service for first two years or 25,000 miles, every 5,000 miles is recommended by them, and it's free. So that is the route I will take. 5k, 10k, 15k, 20k etc..

I did ask the service tech about @ 1K, and he told me that's "old school'....

[_hollywood]

The first oil change is 7500k

[GFo12ce]

Originally Posted by MrBodyMassage

Is this being super anal? Sure it is. That's why we're all on this website, specifically in this subforum

If you changed at 1,000 miles will you ever notice a difference? Probably not. I just posted this as food for thought.

On that note I thought I link my post again to this guys oil quiestion. Also it's an area go get something new for the car you may not have thought of. not to mention maybe some extra insurance for those that plan to keep thier cars a long time. I did them to my Z:
http://www.ft86club.com/forums/showp...86&postcount=3

[luxmn]

changed oil at 1000 miles for break-in purpose and because it was free (you got to work your service rep )

and i can vow for it, the engine came alive afterward

[Bonburner]

Originally Posted by jarviz

I haven no idea what your post just said lol. I just got an oil change though at around 1600mph based on what other members have said regarding the metal shavings.

My god who is your mechanic .. able to expel oils and replace the oil and oil filter all at 1600 mph!

I've been debating doing it at 1k or 3k ...

[ahausheer]

I think if this were beneficial low production high end sports cars like the Corvette ZR1, M3/5, GTR, etc. would recommend an early first change, but they dont. So I wont change it early. And how do we know the moly is part of an additive package as opposed to being left over from assembly lube or normal production process.

[FutureFT86]

Originally Posted by Subie

Whoa that's fast!

you made me lol!

[7thgear]

Originally Posted by jarviz

I haven no idea what your post just said lol. I just got an oil change though at around 1600mph based on what other members have said regarding the metal shavings.

it's known as oil sample testing

there are a number of places that do it

they take a small sample of your oil and analyze it's contents. This provides a good analysis of your engines overall health, particularly whether you have coolant or gasoline enter your oil circulatory system.

doing an oil test every 10-15k is an effective way to keep tabs on your engines health and provide warning signs to possible problems that will take a lot longer to show up "mechanically"

[hankster]

Originally Posted by GFo12ce

I did them to my Z:
http://www.ft86club.com/forums/showp...86&postcount=3

link no linky

[GFo12ce]

Originally Posted by hankster

link no linky

Wierd, I used the link just to my post, heres the whole thing. Mines #3 (so you don't have to fish for it):

http://www.ft86club.com/forums/showthread.php?t=11812