The E85 Thread

[Bond]

As posted by dr20t on my profile: FYI

- ethanol has high dilution properties which break down oil suspension agents in engine oil very quickly. This means instead of lasting 5000-10,000 kms, oil will only be good for say 2500kms before needing replacement.

Just out of curiosity, would a similar attitude apply when using E10? Obviously far lower levels of ethanol but I'd imagine would still have the same effect over time.

[coyote]

No worries Mick. I edited my post while you were typing yours. The Delvac Justin linked to is not currently SN Resource Conserving.

Nothing wrong with a 5W oil in any Subie. Remember that's the cold temp viscosity, so relates to flow at startup. Of course you just don't find 0W50 oils (yet).

The second number relates to viscosity at full operating temp and the factory recommended viscosity is 20! I'm going with 30 and as always, will test to see that it's doing the job. If not, I'll change it.

Lots of reasons I'd not use a 15W in any daily driver, particularly one as gutless as the Yaris. The HTHS viscosity of that Delvac is fantastic, but with a viscosity of 123cSt @ 40C, you'd be sacrificing startup protection for race track endurance.

[<GB>]

Once again mate you never cease to deliver!

And gotya about the flow - warm and fresh haha

Interesting you're willing to go to a 0w30 oil on the yaris. I know the subies don't like anything less than a 5 weight and more suitably a 10/15.

Obviously a fresher motor will be more receptive to a thinner oil like a 5 but a 100,000kms plus subie motor I can't see lasting too long with 5w30. This is only compounded with ethanol fuels too.

Thanks again for your insights and will definitely take your advice on board.

In summary - delvac mx15w40 (or mx 15w50 if i can get a hold of it) is the go for my saugram guzzling new motor.

Mick

I dont understand why anyone would use 5w30 in an older subaru engine

my motul hths at 150deg c is 5.3 mPa.s
and viscosity at 40deg is 122.9mm^2/s
i checked my motul 300v 15w50 and it didnt say anything about sn but says it exceeds sm. i dont think ill be switching to e85 till im happy my oil meets the standard...

[dr20t]

I agree that a 10w is better for flow. 5 for mind is too thin. Yes it will flow at startup (in moderate temps), and this is where most engine friction occurs at first startup, but the resultant drop in pressure is not sufficient enough to deliver protection immediately after startup, especially to the quad avcs type motors which need big oil pressure for the solenoids.

I would love to stick to a 10w50. The problem we have tony is that the 10w oils out there now do not contain enough detergents to keep the oil suspended long enough for use with e85.

People rate the 10w60 for track days (obviously holds viscosity longer at higher sustained temps)

I was sold on the delvac too!

What to do....

[<GB>]

dont go corn lol

[coyote]

What to do....

That's simple. Pick an oil, use it, test it and then go from there.

If you're set on the Delvac, then make that your starting point.

It wouldn't be my starting point, but if I get time later and look around and see what I'd suggest.

Note: Yours and GB's engines are making more power than mine was. More power equals more heated, greater bearing load and higher shear.

[rednose]

May not apply but I have been using Amsoil AMO 10W 40 in my XR6 Turbo on E85 for over a year and change the oil every 10,000 klms.

I had a filtergram analysis and it came back good, next time I drop the oil I will do an oil analysis.

This oil has served me well and will be sticking with it.

When the Gen 5 GT comes later this year I will be using Amsoils signature series.

If anyone in Sydney wants to try Amsoil pm me and I'll get you a price.

[<GB>]

10,000 km is too many km on a turbo car bro id do the, at 5k

[coyote]

10,000 km is too many km on a turbo car

That depends entirely the oil, the car and how it's used. As a blanket statement, it's false.


I had a quick search and couldn't find a single SN Resource Conserving oil that I'd suggest anyone try in a high hp E85 Liberty. Given the rating is more about fuel economy in standard engines, I can't see that changing.

Again, I got great test results from Amsoil 5W30 Series 3000 HDD when using E85. I was tempted to use it in the Yaris, but it's a bit heavy. Still got a few bottles in my garage if anyone wants to buy it!

For the higher hp engines, Redline 0W40 would be worth a try. I'm not a Redline fan, but the specs are good.

At the track, perhaps it might be worth using either GB's 15W50 Motul or the Amsoil Dominator 15W50, but I'd not use them in a daily driven car that I intended to keep.

(They both have similar startup viscosity to the Delvac, but shit on it for high stress protection. Of course they are probably twice the price too)


That's about all I can contribute. You'll need to test your oil in your own engine to find out any more. Oil discussions tend to make the topics of religion and politics look tame and generally are even less informed, so I'll leave the debate to you guys.

[rednose]

10,000 km is too many km on a turbo car bro id do the, at 5k

I think it can do more.

I will test it next time to confirm.

[<GB>]

10,000 km is too many km on a turbo car

That depends entirely the oil, the car and how it's used. As a blanket statement, it's false.


.

it is a blanket ststement based on experance, i look at it as cheap insurance, each to there own

[rednose]

10,000 km is too many km on a turbo car

That depends entirely the oil, the car and how it's used. As a blanket statement, it's false.


.

it is a blanket ststement based on experance, i look at it as cheap insurance, each to there own

I agree with the each to their own statement and also agree with coyote's view that oil debates start to get personal,

but I have been using this oil in my car for over 2 years, 1 year at 370 rwkw on 98 and more than a year at over 400 rwkw.

I'm sure if the oil was not up to the task it would have revealed itself by now.

The car also does about 100 klms a day to and from work.

[<GB>]

oil's cheap... engines and turbos are not

[coyote]

oil's cheap... engines and turbos are not

Then why not change it daily, or at least every time you fill the petrol tank?

[jaydece]

oil's cheap... engines and turbos are not

Then why not change it daily, or at least every time you fill the petrol tank?

BAZINGA....

Thanks for the above information and feedback help coyote