Amsoil 0W-30 analysis, 10k on E85, 33K on motor
 

Decided since I barely see any oil analysis from other people running E85 I'd figure I could chime in,

Oil: Amsoil Signature Series 0W-30
Miles on interval: 4k
Miles on Motor:33k
Running E85 since 20K miles on OFT E85 tune

other mods: TRD USA intake,
Nameless EL Headers(ceramic coated), Motiv overpipe
(ceramic coated), Motiv Catted Front pipe, Stock
Midpipe, TRD Japan Quad axleback.

This oil sample came with nothing but abuse, 1 very hot track day, around 5+ Autocross's, highly spirited drives, and highway driving. oil has seen temps well above 240 at times. After being on E85 since 20k and using this oil ever since the first oil change, I feel pretty comfy now and relaxed that the motor is looking healthy!

most oil changes were done at 3-5k intervals


http://s11.postimg.org/xelwy8fb7/oil.png

I don't run e85 so I have not done a ton of research, but do you need to change the oil more often when running it? Just curios if running Amsoil on 91 could go longer to say 10K miles.

Not sure if you read the coments from the lab report, but in my case It can go further than 4k without loosing its additive properties or breaking down. It did mention to Try 6k mile intervals next time :)

In regards to 91 in my opinion, it just depends how you drive. I cant comment on that. I have seen amsoil intervals much higher than 10k though.

Yeah, I saw the 6k recommendation. That's very good considering the abuse you put it through. I was just curious about the e85 specifically. I am just starting to run UOAs myself. First one is gonna go in next week.

Please post up your results too. I'd be interested to see a comparison to the one above. :thumbsup:

Taking it out to 6k miles would probably drop the viscosity down to a 20 grade oil, but that's probably fine for your application. The 10W-30 would probably be more stable and I'd recommend that any day over a 0W-30 in an 86 that sees track time (especially if you have more than 1 track day vs. mainly auto-x). I know an Amsoil dealer that runs the SS 10W-30 in an Audi TT with great uoa's and the oil isn't even recommended for Audi's.

I'm surprised at the high universal averages for silicon. This is probably due to so many low mileage 86's doing uoa's or a lot of you guys running aftermarket intakes. A paper panel filter or an Amsoil Ea filter would probably drop silicon (dirt) down into the single digits.

-Dennis

Anyone have any thoughts on Amsoil versus Eneos Sustina? Have been pretty satisified by Amsoil in the past, was wondering if Sustina is worth the change performance wise. Particularly for hard use.

Hi Dennis

Realizing that it is just your opinion with no liability implied, do you recommend a specific vicosity and brand for a street driven car that sees 6-8 track weekends in the southeast? (driven hard on R-Comps but using an oil cooler)

Thanks for all the input you have shared on this topic by the way :thumbsup:

:threadjacked: :offtopic:

It's a tough call whether or not you need a dedicated race oil. Amsoil Dominator 5W-20 (to be somewhat on topic), Motul 300 0W-20, or Red Line 5W-20. The Motul and Red Line have more detergents, but even the Amsoil would be fine for a short interval of 3-4k-ish (or possibly longer based on uoa).

Actually, Amsoil Signature Series 5W-20 might be a good fit. In general, I'd go with a 5W-20 over a 0W-20 (unless the 0W-20 is a race oil). 5W-20's are much more stable than most 0W-20's or 5W-30's. Compare the lower NOACK volatility among the Amsoil oils.

-Dennis

So would you recommend against using Sustina for such applications as well?

I thought I replied to this, but don't know what happened. It's probably fine if you use the 5W-30. Or mix and fine tune to the oil pressure needed for your conditions (if you have a gauge).

IMO, for track conditions I would be looking for higher HTHS and lower NOACK, not an oil that is light at start-up.

-Dennis

Detergents compete with anti wear components of the additive package. I see no particular evidence that 5w20 oils are generally more shear stable than 0W20 oils. However counterintuitive it may seem, higher quality base stocks are necessarily called for to create a 0W20 vs creation of a 5W20.


Dennis, I am sure you are familiar with Doug Hillary on bitog. He states, in his expert opinion, that there is not any significant difference, in terms of wear, between a 5PPM and 75PPM number for Fe in a UOA. Doug Hillary has spent a lifetime studying service fleets in Australia and nurburgring race cars in Germany for the major oil companies.


Now I have an off topic, off the wall question for y'all. I was browsing at Pep Boys today. On the shelf was Valvoline Nextgen Synthetic 5W20, at the opposite end of the Noack volatility index, from Amsoil. The price was $1.80/qt-no limit. How many quarts would you like to buy? (Insert Mr. Greenteeth.)