B SweepeR B6

ok guys, i just talked to teh shop and they will change it out, should i go with 10w 30 synthetic or 5-20 or what? please if anyone can respond in the next 5 minutes!

CrazyPhuD

Specs say 10w-30...

5w-40 is also approved for the f20C but in most cases 10w30 is what you want to use.

RACER

Somebody please post a pic of an S2000 oil cap

xviper

And maybe a pic of what the OWNER'S MANUAL looks like so he can find it and READ IT!

slalom44

The S2000 was designed to take 10W30 oil. With this viscosity, you still get in excess of 80 PSI at startup even in warm climates. At highway speeds, you will typcally see around 80 PSI with a warm engine. The engine's pressure relief valve kicks in at around 95 PSI. If the engine sees more resistance than 95 PSI, it will divert oil directly back to the oilpan so that the engine sees no more than 95 PSI. So if you are using a 15W50 oil, you are definitely reducing flow through your engine at startup (the most critical time) and you are likely reducing flow at highway speeds when the engine is warm.

Something I learned in Transport Phenomena class back in college when I was working on a Chemical Engineering Degree: The smaller the orifice, the greater the resistance to flow per cross sectional area when the viscosity is increased. Therefore, smaller orifices will get proportionately less flow using less viscous oil. And spray patterns will definitely change. Consider trying to put honey into a spray bottle and atomizing it on a surface. Get the picture?

And viscous liquids do a poorer job of removing heat. Even if you can get away with not doing noticeable damage to your engine, are you willig to take the risk?

Utah S2K

In my opinion your fine! Look where these folks are posting from! I know personally that Xviper thinks his car is white all year long. I grew up in San Marino a few doors down and can tell you the likely hood of 32 degrees, worse case, is VERY LOW even in the morning. Your oil is fine which is why they put it in. As for "check the manual" the chart is on page 158 in my '01 manual.......your oil fits tright in. I'd have no problem running that weight in my Pantera if I was still down there. If someone from a SoCal group posts take a note but ....Ohio.....Calgary?

Utsh

B SweepeR B6

if you hadn't noticed, in my post i said 5w20 was suggested by the guy over there, THATS WHY i said that and not the 10w30, i think some ppl have a huge problem with READING the whole paragraph. they read and soak in WHAT THEY want to that can give them a chance to build up their self-esteem (as in start clowing someone).

ok guys i went back and got the OIL changed with Mobile 1 sythetic 10w30! THANKS FOR THE HUGE HELP!

B SweepeR B6

btw, i dono if its me or not, but i do feel a lil bit of a difference, seems a lot smoother and the revs seem to be cleaner.

hpark

i don't understand what the issue is???
Honda recommends 10W-30 so why not change it out?? better safe than sorry....it takes like 20 bucks to get some 10W-30 syn oil and seems like you leave the car at the shop anyways so no work on your part.

gerardog

I'm using Castrol RS Racing 0w-40 ... planning to go back to Castrol RS Racing 10w-60 by summer. Do you guys have this oil in the US? I think it's much better then Mobil 1!

Castrol RS oil