bb4srv

Manual calls for 10w30. After reviewing, the viscosity at temperature of 10w30 and 0w30 is the same, only difference is thinner at lower temp for 0w30.

So 0w30 okay for use in the S2000?

S2KERRP2

yes.

S2000 Cabrio

...stick with the 10w30. unless you live in a very cold climate then 0w30 or 5w30 would be perfect. good luck.

cosmomiller

Absolutely. Take a look at this well known site as to the reasons why:


http://www.bobistheoilguy.com/motor-oil-101/

The last number, 30 in this case, is the viscosity at operating temperature. Honda recommends a 30 oil viscosity at operating temp and 0W-30 and 10W-30 are both the same after warm up. The great thing about 0W-XX is the oil has much lower viscosity at start up, compared to 10W-XX, no matter if it is summer or winter. It all helps to lubricate faster and reduce wear on start. In addition, synthetic leaves a film that dino oil does not so you get a little more lubrication effect on start from that.

The 0w oils are relatively new to the scene; after the S2000 was out.

xpressive

I've run 0w-30 for the past 30k miles and on S/C. It's been great and no issues on oil analysis and TBN are good.

profit_child

Came here to post this but he said it much better...

I run 0w-30 royal purple on my Supercharged S2000 it has been good.

Car Analogy

I have a different opinion. I suggest its always best to go for the lowest 'cold' number you can get, so that oil will flow better when engine is cold.

Thus the ideal oil for this car would be 0w-30. Honda likely would have spec'ed it if it was available when this car was designed.

Most wear occurs during cold starts and running cold while oil is not warm yet. So anything that can improve cold oil flow can have significant impact long term.

Even in summer temps, oil is cold enough on first start that it won't flow well. You really want the lowest cold number you can get year round.

It used to be that a large spread between cold number and hot number was achieved with additives that would quickly break down, rendering the oil ineffective. With modern synthetics that is no longer the case.

This car doesn't need synthetic, but it can benefit from oil that has a cold number of 0, and hot number that meets Hondas requirements (30 weight), and where those numbers dont breakdown quickly. That means synthetic.

So this car doesnt need synthetic, unless you are going synthetic to be able to use 0w-30.

Sent from my SM-G920P using IB AutoGroup

B serious

The issue with some off the shelf 0W30's is that they're designed more for energy conservation at any temp. So they'll likely be on the "light" side of 30 when warmed up.

5W30 is kind of the same way. They're all usually designed on the thin side of 30.

Castrol Edge 0W30 is one exception, though. If you can find it at your autoparts store...use that. Its actually synthetic, and it retains viscosity at operating temp better than Edge 10W30. Amazon sells it as well.

flanders

I was going to say the opposite to what B serious said, I might have looked at different oils though, I remember Total was also an exception.
It do seem like most 0W-30 oils are true synthetics though unlike the 5W and 10W versions.

Apex1.0

I went with 5w30 am soil because it actually had a slightly higher high temp viscosity then their 10w30.

I agree with the above, run the lowest low number you can. Maybe the perfect street oil is 0w30. However looking at my uoa on my tracked f20c, I think a 40w may be the way to reduce shearing. I would submit the perfect oil for the track may be 0w40.