Wasn't that guy running an Amsoil bypass filtration system?

 

Amsoil sso formula changed again to 25k interval, also they added 3 more weight viscositiy variaties. No filter lasts 35k miles so they made it consistent.

I use sso and the Ea filter in my S. I'm currently at 10k miles right now and I don't think I'm ever going to use anything but sso. The car runs soo smooth and it hasn't burned a drop so far

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No point using a 40 weight in an N/A S2000.
(not even a track car - get an oil cooler)

0W-40 is neither fish nor flesh.

 

yes , I should have pre-faced it with his conditions, my bad. He had the Amsoil filtration system, a pre-lube oiler, and added 5 quarts of oil over 35,000 miles. But his wear was lower than I would see on my car over a 5,000 mile run. Still very impressive.

 

That's why I used the word "Most"....some stock all and some stock the more pop/fast moving items.I'm glad your local does carry all.

\rlr
carolina

 

40 weight is too thick for the clearances we run in these motors. Stock bearing clearances around 0.0010 and p-w clearances less than 0.0008 in a stock motor... If you have a built motor with really loose clearances then maybe, but it shouldnt be built that loose anyway.

your best bet is to get an oil pressure gauge, if your oil is too light the pressure will be low, too heavy and the pressure will be high.

 

40 weight is too thick for the clearances we run in these motors. Stock bearing clearances around 0.0010 and p-w clearances less than 0.0008 in a stock motor... If you have a built motor with really loose clearances then maybe, but it shouldnt be built that loose anyway.

your best bet is to get an oil pressure gauge, if your oil is too light the pressure will be low, too heavy and the pressure will be high.
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well the reason why I brought up 0w40 is because in S2k manual Honda recommends either 10w30 or 5w40

 

40 weight is too thick for the clearances we run in these motors. Stock bearing clearances around 0.0010 and p-w clearances less than 0.0008 in a stock motor... If you have a built motor with really loose clearances then maybe, but it shouldnt be built that loose anyway.

your best bet is to get an oil pressure gauge, if your oil is too light the pressure will be low, too heavy and the pressure will be high.
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well the reason why I brought up 0w40 is because in S2k manual Honda recommends either 10w30 or 5w40
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You're right it is an acceptable viscosity given the owner's manual recommendation, but like listed above it won't benefit you any. If you did run it I'd use an oil that is formulated on the thinner side of a 40 weight, Mobil1 0w40 and Amsoil 5w40 have thin weight 40 oils that are only a bit thicker than some 30 weights, on the low side of the 40 weight spec. They typically shear down into the 30 weight spec by the end of an oil change interval.

 

I use mobil1 0-40 in my turbo S, starts out thin to get to moving parts and my engine runs hot as hell from the turbo so 40 to help protect it.

 

5W-40 is in the manual so it will not hurt the engine, no matter what the bearing clearances are.
The oil pressure you see using a gauge is not inside a bearing, its in the oil gallery's.
More pressure just means it's thicker stuff that's pumped around or more of it going through, or both.
IMO the F20/F22 was designed around a 30 weight.
40 weight oil will give no extra protection at operating temp, sure, it will have a higher HTHS but the engine doesn't need it.
The 5W-40 is in the manual because of the 5W, for cold starts, there is a direct reference to outside temperature when they mention 5W-40.
What is does do is reduce the oil flow at higher rpm (at operating temp) as the oil pump bypass will open at a lower rpm.
It will also need more HP to pump around and IMO makes the engine feel less free to rev.
There is really no benefit using a 0W-40 for cold starts as (almost) all 5W-30's are thinner above 0C.
IOW: no point using a 0W-40.
Yes, I've used them all, 5W-40, 0W-40, 5W-30 and 0W-30.

I guess it comes down to how much you want to spend, how you feel about leaving oil in for a while, how often you are compelled to change oil.
If you don't want to spend much, you're forced to change more often.
If you don't want to leave it in for a while, you might as well go cheap.
If you're compelled to change often, go cheap, allthough that's hard to do for most.
Going cheap will limit you to 5W-30's, if it doens't get that cold outside you're fine.

I'm using Amsoil SSO 0W-30 and have stocked up on it.
I like it because it can handle the km's and the time, changing once a year is IMO allready overkill.
It did make my engine sound a lot better during a cold (anything below 10C) start, especially with the 2000 rpm cold start peak.
Not that long ago I convinced a colleague to switch to SSO in his Civic.
He was sceptical oil would make a change but he wasn't happy with the 5W-40 the dealer used last change.
SSO changed his mind completely, smoother start and running smoother at temp.
He bought 10L of SSO and is thinking to buy more before supply runs out.
So am I actually.

So, IOW, IMO, under my circumstances: 0W-30 is a no-brainer