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#4379361 - 04/14/17 10:17 AM Need oil recommendation for high rpm Honda
sds Offline


Registered: 12/03/14
Posts: 12
Loc: MA
2011 Civic Si. ~71000 miles.

Unmodified for 60K miles, didn't consume much oil then (maybe 1/3qt every 5K). It was run with whatever oil I had on the shelf basically (PP or M1 EP 5W30, didn't matter).

Currently modified with bigger cams, slightly ported oil pump, slightly larger sump, and too many bolt ons to list, making about 240whp/165wtq, revving to ~8600RPM. The car is otherwise meticulously maintained.

As I live in the city, most of my drives consist of a cold start and maybe 1-5 miles of driving. This is exacerbated in the winter since I don't really drive except for around-town errands in Boston. I never push the motor on it until it's warm, but I do drive hard when I get the chance. I'm mildly concerned because it's burning a bit more oil now, on the order of 1/2-2/3 qt every 3K.

I know I'm not going easy on this motor with the combination of:

  • (sometimes very) cold starts and short trips
  • very high rpm


Is there anything I should be doing with regards to choosing my oil more carefully? I've been spoiled with all my Hondas as they haven't really cared what oil I use, but this setting is certainly a bit more extreme. Many thanks in advance!

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#4379372 - 04/14/17 10:30 AM Re: Need oil recommendation for high rpm Honda [Re: sds]
wemay Offline


Registered: 04/04/12
Posts: 8864
Loc: Southeast Florida
Sounds like a fun car.
I would definitely up the HTHS (3.0+) as it sounds like this Si is pushed hard and probably trashes oil during high RPM runs.

Edge 0W40
M1 0W40
PP 0W40
PP Euro L 5W30?

All can be bought at Walmart for under $26 a 5qt jug.
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#4379379 - 04/14/17 10:43 AM Re: Need oil recommendation for high rpm Honda [Re: sds]
double vanos Offline


Registered: 08/05/04
Posts: 1884
Loc: 5600 feet elevation, Arizona
Edge 0w40
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#4379382 - 04/14/17 10:46 AM Re: Need oil recommendation for high rpm Honda [Re: sds]
Cujet Offline


Registered: 02/15/03
Posts: 7146
Loc: Jupiter, Florida
M1, 0W-40 may be an excellent choice. It's HTHS is great, and it's excellent at cold temps too. Great all around oil.

FWIW, I use 15W-50 in my 407RWHP S2000 with 2.2L engine. But I am running 19.5 PSI boost without an external oil cooler. So the higher viscosity choice is partially to combat higher oil temps and very high loading.
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#4379410 - 04/14/17 11:27 AM Re: Need oil recommendation for high rpm Honda [Re: sds]
sds Offline


Registered: 12/03/14
Posts: 12
Loc: MA
Okay great--headed off to Walmart to exchange the M1 EP 5W30 I have sitting here for some M1 0W40.

Would this oil also be appropriate for winter usage? (New England, think 0F to 40F).

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#4379432 - 04/14/17 12:08 PM Re: Need oil recommendation for high rpm Honda [Re: sds]
demarpaint Offline


Registered: 07/03/05
Posts: 29747
Loc: NY
I'd probably use Mobil 1 0W40.
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#4379434 - 04/14/17 12:13 PM Re: Need oil recommendation for high rpm Honda [Re: sds]
kschachn Offline


Registered: 12/26/05
Posts: 9390
Loc: Upper Midwest
Originally Posted By: sds
Okay great--headed off to Walmart to exchange the M1 EP 5W30 I have sitting here for some M1 0W40.

Would this oil also be appropriate for winter usage? (New England, think 0F to 40F).


Why wouldn't it be? It's a 0W you aren't going to get any better cold weather performance than that. Not that you'd need it above 0F though.
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#4379443 - 04/14/17 12:27 PM Re: Need oil recommendation for high rpm Honda [Re: sds]
robertcope Offline


Registered: 01/10/08
Posts: 1001
Loc: TX
I've run M1 0W-40 in my AP1 S2000 and NSX. It ought to work. I will admit that I've recently moved to Red Line 10W-30, but not for any good reason other than "I wanted to". Both cars see a fair amount of track time.


Edited by robertcope (04/14/17 12:33 PM)

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#4379446 - 04/14/17 12:34 PM Re: Need oil recommendation for high rpm Honda [Re: sds]
901Memphis Offline


Registered: 08/14/10
Posts: 12893
Loc: Northern Kentucky
Edge 0w40 or Mobil 1 high mileage 10w40 for summer
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#4379463 - 04/14/17 01:07 PM Re: Need oil recommendation for high rpm Honda [Re: sds]
dgunay Offline


Registered: 12/05/14
Posts: 609
Loc: Toronto
I'd use 40 weight. M1 0w40 and Rotella T6 5w40 are some good options.

Sounds like a fun car! Make sure you check your spark plugs and valve adjustment frequently.

8600 rpm is not that high at all, the weak point is the oil pump for k20z3. If you use k20a2 (plug & play) or s2000 (need modification) oil pump, it can rev up to 9000-9200 rpm safely.
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Cooper Zeon RS3-A / Continental WinterContact SI

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#4379472 - 04/14/17 01:18 PM Re: Need oil recommendation for high rpm Honda [Re: dgunay]
sds Offline


Registered: 12/03/14
Posts: 12
Loc: MA
Originally Posted By: dgunay
I'd use 40 weight. M1 0w40 and Rotella T6 5w40 are some good options.

Sounds like a fun car! Make sure you check your spark plugs and valve adjustment frequently.

8600 rpm is not that high at all, the weak point is the oil pump for k20z3. If you use k20a2 (plug & play) or s2000 (need modification) oil pump, it can rev up to 9000-9200 rpm safely.


I have an FD2 oil pump--the rev limit is there to protect the valvetrain with the bigger cams. Will do on the 40 weight--just bought some 0W40 and will probably just mix it 50:50 with the existing 5W30 that I have.

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#4379480 - 04/14/17 01:27 PM Re: Need oil recommendation for high rpm Honda [Re: sds]
dgunay Offline


Registered: 12/05/14
Posts: 609
Loc: Toronto
Do you have stage 1 or 2 cams?
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2009 Acura CSX (K20Z2 Auto)
PUP 5w30 / M1-110 / Maxlife ATF
Koni STR.T Struts / Tein S-Tech Springs / 20mm OEM RSB
Cooper Zeon RS3-A / Continental WinterContact SI

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#4379583 - 04/14/17 03:43 PM Re: Need oil recommendation for high rpm Honda [Re: sds]
wemay Offline


Registered: 04/04/12
Posts: 8864
Loc: Southeast Florida
Originally Posted By: sds
Okay great--headed off to Walmart to exchange the M1 EP 5W30 I have sitting here for some M1 0W40.

Would this oil also be appropriate for winter usage? (New England, think 0F to 40F).



OW40 will take care of you from PLUTO<--->SUN.
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#4379659 - 04/14/17 05:59 PM Re: Need oil recommendation for high rpm Honda [Re: wemay]
bbhero Online   content


Registered: 03/20/15
Posts: 4616
Loc: Virginia
That's an AWESOME analogy there Wemay!! Well played man.
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#4379717 - 04/14/17 07:30 PM Re: Need oil recommendation for high rpm Honda [Re: sds]
yvon_la Offline


Registered: 05/20/14
Posts: 1429
Loc: quebec canada
Amzoil synthetic compressor oil ( probably sae20)you did say Honda rpm territory)
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