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#4504816 - 09/01/17 07:46 PM Honda vs Acura K24 oil specs.
aquariuscsm Online   content


Registered: 12/30/06
Posts: 18173
Loc: Dallas,Tx USA
I saw this today. K24 engine in an Acura. It says "5W30" on the oil cap. The Acura oil chart is also interesting. It first specs 5W30,then 5W20,then next says 0W20 "ok" and "acceptable". First of all,why does Acura spec 5W30 for the K24 when Honda specs 5W and 0W20 only? Is the engine identical in both Acura and Honda cars? Per the Acura chart,is it saying the 20wts are a compromise in protection by saying it's ok and acceptable?



_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4504829 - 09/01/17 08:07 PM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
PeterPolyol Offline


Registered: 03/06/16
Posts: 1345
Loc: toronto
The high output versions of the K engines had called for 30

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#4504878 - 09/01/17 09:00 PM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
Trav Offline


Registered: 11/20/06
Posts: 18893
Loc: MA, Mittelfranken.de
Just go with the thicker oil, Acura is just another Honda. Its all a game, the engine wouldn't mind a bit if you put some 0w40 in it in fact it might have less wear and be quieter.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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#4504914 - 09/01/17 09:38 PM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
slacktide_bitog Online   content


Registered: 03/20/08
Posts: 6175
Loc: USA
They are slightly different, as Peter alluded to. The engines are not identical.

The TSX K24 has a higher compression ratio (10.5:1 vs 9.6:1), 200 hp instead of 160, uses premium not regular.

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#4504966 - 09/01/17 11:01 PM Re: Honda vs Acura K24 oil specs. [Re: slacktide_bitog]
Trav Offline


Registered: 11/20/06
Posts: 18893
Loc: MA, Mittelfranken.de
Its still a Honda K24 just with higher compression, its identical otherwise in every way. The engine is sold in Europe as a Honda (acura doesn't even exist as a brand) in all variants and all use the same oil.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

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#4505111 - 09/02/17 07:16 AM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
Vladiator Offline


Registered: 01/04/16
Posts: 728
Loc: NC
And on the other side of the pond all Hondas that I know ride on nothing but 10w40/5w40/0w40 synthetics. From Europe to Siberia. I use the same regime on this side of the pond as well. Except 10w40 tho. My honda purrs like a kitten on w40 oils and so did all previously owned hondas.
_________________________
Thicker oils give protection for severe operations such as driving in mountains, pulling a boat, dusty conditions, short trips, high rpm, overloading, overheating and overcooling. Thin oils give MPG.

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#4505121 - 09/02/17 07:22 AM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
philipp10 Offline


Registered: 05/09/14
Posts: 1179
Loc: Minnesota
splitting hairs again?

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#4505173 - 09/02/17 08:20 AM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
fdcg27 Offline


Registered: 09/25/09
Posts: 15702
Loc: OH
If you'd rather use a 5W-30, then just go ahead and do it.
Certainly won't do any harm.
A quick calculation in my head indicates that if I drive 1500 miles a month, which our K24 is now seeing, I might save an entire gallon of gas using a 0W-20 rather than a 5W-30.
Not enough to worry about if you're inclined to use a 5W-30.
Go for it and let us know what the impact on willingness to rev and fuel consumption is. I'd bet you'll see no discernable difference and I'd also bet that the engine will seem smoother and quieter.
_________________________
17 Forester 12K MSS 0W-20
12 Accord LX 86K PP 5W-20
09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i

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#4505176 - 09/02/17 08:22 AM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
dblshock Offline


Registered: 04/24/07
Posts: 2655
Loc: WI.
alot smoother.
_________________________
16 Civic Coupe Touring
640:1 TCW-3 E091
Edge 0/40/XG7317
Firehawk Indy 500

06 4Runner SR5 135k
640:1 TCW-3
M1 0/40 XG3614
Falken Wildpeak AT3W

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#4505281 - 09/02/17 10:22 AM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
SLO_Town Offline


Registered: 03/03/11
Posts: 665
Loc: California's Wine Country
Folks:

I drive a bought new by me 2010 Honda Element SC. I have 158K miles on it now. The K24 motor has always sounded "industrial", like a tractor. It's always been noisiest when cold, with what sounds like piston slap.

Honda specs 5W-20 (and later back spec-ing 0W-20). I've used those two viscosities, Mobi1 1 and Castrol, the Extended Performance versions. One time I tried German Castrol 0W-30 to see if that would quiet down the motor. It didn't. The last year or so I've been using Castrol Extended Performance 5W-30. The motor remains as noisy as it was on 5W-20.

My point is that anyone who claims that a thicker oil will quiet down the K24, well, it didn't quiet mine down.

Just an FYI. I'm not picking a fight.

Scott
_________________________
03 BMW 330Ci (Euro Castrol 0W-30)
10 Honda Element (Castrol Edge EP 5W-30)
11 BMW 328i (Euro Castrol 0W-30)
15 Ford Focus (Castrol Edge EP 5W-20)

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#4505351 - 09/02/17 11:22 AM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
aquariuscsm Online   content


Registered: 12/30/06
Posts: 18173
Loc: Dallas,Tx USA
Mine purrs like a happy kitty on PP 0W20!! From cold start to hot start,it's smooth and silent. I'm just like the rest of everyone here,always curious and on the quest for ultimate engine lubrication. After all,that's what brought us all here in the first place laugh If we weren't all oil nerds and car freaks,we wouldn't be here.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4505853 - 09/02/17 10:03 PM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
gregk24 Offline


Registered: 04/13/13
Posts: 5602
Loc: FL, USA
Originally Posted By: aquariuscsm
Mine purrs like a happy kitty on PP 0W20!! From cold start to hot start,it's smooth and silent. I'm just like the rest of everyone here,always curious and on the quest for ultimate engine lubrication. After all,that's what brought us all here in the first place laugh If we weren't all oil nerds and car freaks,we wouldn't be here.


+1
_________________________
2012 Honda Accord EX-L K24z3
53,xxx miles
PPPP 0w20 / Fram Ultra

2014 VW Jetta SE 1.8T ea888
37,xxx miles
Castrol Edge 0w40 / OEM filter

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#4505917 - 09/02/17 11:58 PM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
K23Turbo Offline


Registered: 02/05/09
Posts: 224
Loc: Pennsylvania
I had a K20Z3 in a Civic Si specd for 5W30. It loved the stuff and didn't matter which brand. Also had a RDX which required synthetic 5W30. M1 and PP at the time. For a K24 motor I'd run a synthetic 5w30, 10W30, 0W30 or 0W40 European Formula.

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#4505934 - 09/03/17 01:38 AM Re: Honda vs Acura K24 oil specs. [Re: aquariuscsm]
Shannow Online   content


Registered: 12/12/02
Posts: 39875
Loc: 'Stralia
Just to add to the discussion, the same base engine when used as an outboard (BF135) specifies 10W30.

https://www.northeastmarine.net/images/products/manuals/honda/bf135-manual.pdf Page 69.

and FC-W

https://www.nmma.org/assets/cabinets/Cabinet456/FC-W%20Combined%20Certification%20Procedure%20Manual%20(3%2016)%201.pdf

which specifies a post shear test HTHS of 3.3.

If all this "flow" was good, why doesn't Honda spec for "flow" ???

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#4505939 - 09/03/17 02:09 AM Re: Honda vs Acura K24 oil specs. [Re: Shannow]
FZ1 Offline


Registered: 02/07/08
Posts: 4727
Loc: Texas
Much more effort and rpms required of an outboard. 4 wheels roll a lot easier than a bass boat running 4000-5500 rpms most of the time. So I can see why a thicker oil is required for outboards.

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