Lol...it wasn't directed towards you. Your comments were constructive; which I can appreciate whether or not someone agrees/disagrees with me.

When people baselessly say "OMG. SO MUCH FAIL. SMH. I CAN'T EVEN. BBQ. LMFAO. JC. BRO. WOW. LOL" without offering anything constructive at all...it just comes off as ignorant.

I asked the disagreed party to explain how I was wrong...either for my own information or to add information to the thread. That's apparently not going to happen because he "doesn't want to get into it" after e-shaking his head in utter disparoval at my damaging and infuriating comments that were SO crazy that he just can't even think of the words to begrudgingly rebut my statement.

Dammit. Now we're all mixed up and emotional.

 

Now if we're talking about only Castrol edge:

0w-30 and 10w-30 should have similar burnoff rates, so I'd pick between those two. 10w-30 has a pour point of -30 whereas 0w-30 has a pour point of -45. If you want added cold weather protection and -45 degrees is a real concern for you go with 0w-30, 5w-30 will work too but at operating temp it's actually a bit thinner than 10w-30 and moreso than 0w-30, so you may burn it a bit more than the other two. 0w-40 would also work, I've used 5w-30 and it burned a bit over a quart/1k miles, 10w-30 barely burns at all, like a quart every 2,500 miles. Haven't tried 0w-30 but it being a bit thicker at operating temp I'm guessing it would have similar burn off. These are my experiences, yours may vary but 0w-30 is a very good oil. If you can get that, use it with confidence.

 

Yes. I would agree and we have had similar experiences. Although my AP1 and my GF's AP2 did not burn any of these oils at a noticeable rate....I found that the 5W30 edge appeared very thin when hot....and was noticeably more runny when drained, as compared to 0W30 or 10W30 edge. I also found that the engine was noisier.

None of this is science. But when I looked at Castrol's material sheets...I noticed how 5W30 was quite a bit thinner than Edge 0W30 or 10W30...and it was, infact, slightly thinner than some other brand 5W30 oils.

I know that this information doesn't tell me what is "too thin" for a S2000. But using a "typical" 10W30 as a baseline (since 10W30 is the Honda recommended weight), Castrol's 5W30 edge is a bit thin. Combine that with my observed louder engine noise...and I ended up straying away from it.

 

The number before the 'W' is usually but not always relative to the number after the 'W'. A Castrol 5W-40 is thicker than a 10W-30 when cold even though some people just compare the 5W to the 10W and think the 5W will always be thinner when cold.

But in some cases it can mean nothing at all because a 0W-30 is thicker than a 5W-30 when cold and hot. lol.


So moral of the story is, watch less TV and learn how to read a datasheet...
http://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/FA44701A9DEA1FE6802579D1004C8B31/$File/BPXE-8SYHNB.pdf

 

"But in some cases it can mean nothing at all because a 0W-30 is thicker than a 5W-30 when cold and hot."

 

From my '06 owners manual (but what would Honda engineers know about this?!)

(Emphasis added.)

Car/engine makers have routinely dropped oil viscosity levels the past 10 years. One of my cars is spec'd at 0W-20 -- again for optimum fuel economy. 10W-30, 5W-30, 5W-40 is fine based on conditions. 10W-30 is available everywhere.

-- Chuck

 

This is all I implied with my "sarcastic, unfounded and useless" response to someone earlier

 

Uh...no...that's not anything close to what you implied.

I asked why you thought my original post was erroneous because I thought you might have some input. But your response was that "you don't want to discuss it here".

You're saying you have 20 years of experience building engines? So why not just explain why my whole post was "smh" and "fail"? Seems like you have more experience backpedaling on the internet than you do anything else.

 

From my experience the greater the oil ranges are, the quicker it will shear and/or have a higher Ack. i.e 0W40 vs 10W40

Not always the case, but a rule of thumb I go by if I don't have the time to research but need to grab an oil.

 

Did you read Castrol's datasheet? It's right there in black and white.


The whole point of my post was to demonstrate how those numbers mean nothing. It all depends on what the datasheet says. Castrol's 0W-30 is thicker than its 5W-30 when both hot and cold.

Please read this datasheet!
http://msdspds.castrol.com/bpglis/FusionPDS.nsf/Files/FA44701A9DEA1FE6802579D1004C8B31/$File/BPXE-8SYHNB.pdf

0W-30
Viscosity @ 100C, cSt = 12.21
Viscosity @ 40C, cSt = 72.0

5W-30
Viscosity @ 100C, cSt = 10.7
Viscosity @ 40C, cSt = 62.64