Why does my oil cap say 5W-20?
12-29-2006, 10:55 AM
#21
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RACER Posted on Dec 29 2006, 07:31 PM
You're into SM?
To each their own
ej3ffrey Posted: Dec 23 2006, 02:22 AM
IRMC 
(IIRC
it's an official acronym)
Mobil 1 is SM rated.
To each their own
ej3ffrey Posted: Dec 23 2006, 02:22 AM
I just got my oil change done and they put in 5W-20 fully synthetic oil (royal purple).
(IIRC
it's an official acronym)
08-14-2019, 11:00 AM
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Spoon Fed (08-14-2019)
08-14-2019, 11:29 AM
#25
Yeah saw that, but thought he was speculating... and I wanted to know, because I have the same question about my cap.. I've owned the car since 05 (2nd owner) so just found it a very strange coincidence that we both would have the same cap swapping scenario
08-14-2019, 12:14 PM
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Seems like y'all two are not the only ones. K series caps must just be strewn about the place for anyone to take.
To answer your root question, 00-09 S2000's spec out 10W30. All S2000 caps should say 10W30.
08-14-2019, 04:00 PM
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Actually the best oil to use is 0W30, M1 synthetic. Everyone agrees completely.
08-15-2019, 04:29 AM
#28
08-15-2019, 04:59 AM
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08-15-2019, 06:07 AM
#30
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Lol
To be safe and sure, always go with what the manufacturer recommends and if any issues, test it.
That being said, if using best blends or synthetics you can use many different weights depending on your application. If you live in a cold environment 0-30, if warm environment 10-30, if tracking 10-40, 20-50 and there are other combos. What ever you choose, change oil and filter. Filtration is very important, in some ways as important as the oil, as they keep contaminates out of the engine.
if you drive in severe conditions, change at half intervals.
Thanks
That being said, if using best blends or synthetics you can use many different weights depending on your application. If you live in a cold environment 0-30, if warm environment 10-30, if tracking 10-40, 20-50 and there are other combos. What ever you choose, change oil and filter. Filtration is very important, in some ways as important as the oil, as they keep contaminates out of the engine.
if you drive in severe conditions, change at half intervals.
Thanks