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0W40 in Air Cooled Engines? #5398256 04/09/20 10:03 AM
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Josh48065 Offline OP
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Hello all,

Having a typical BITOG moment. I had several leftover quarts of Pennzoil 0w40 A3/B3 A3/B4 oil left that I changed all my equipment to 0w40 this week. (JD riding mower, GX200 pressure washer, push mower, and generator)

Lots of reading here on BITOG - Tend to recommend HDEO oils. T6 for example. Now I am starting to doubt my oil choice... Even considering switch them all back to Rotella T6 (had in last year)

Question - Would you have any concerns with using 0w40 in your air cooled equipment? (Concerns of shearing for example?....but this 0w40 does carry A3/B4 spec so HTHS > 3.5.....??)

Thoughts/feedback?

Thanks

- Josh

Last edited by Josh48065; 04/09/20 10:07 AM.
Re: 0W40 in Air Cooled Engines? [Re: Josh48065] #5398262 04/09/20 10:08 AM
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Bighorn2500 Offline
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I'd run it without any concerns, maybe not as many hours as I would with a HDEO but if its what you have available go for it.


2012 Ram 2500 SLT 6.7L Cummins 4x4
2018 Dodge Durango GT 3.6L 4x4
Re: 0W40 in Air Cooled Engines? [Re: Josh48065] #5398264 04/09/20 10:11 AM
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racin4ds Offline
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PCMO's are neutered these days, hence the recommendation for HDMO's or specific small engine oils which weren't stripped of the good additives just to keep catalysts happy.

It won't kill your engines, but I wouldn't run it nearly as long as usual.


Just say NO to thin oils and M1!
05 F350 Powerstroke
05 Hyundai Tucson
'13 Passat TDi SE+Nav
Re: 0W40 in Air Cooled Engines? [Re: Josh48065] #5398309 04/09/20 10:57 AM
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c502cid Offline
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I'm the opposite end of the spectrum... I put "drip" oil in all my OPE. What ever drips out of the now 99% empty bottle from oil changes, atf changes, gear oil, MMO...whatever... right now I just changed atf and transfer cases on a couple of trucks, the drip oil is rather reddish. No matter, whatever is in the bottle goes in the OPE year after year and it works fine. Been doing it for over 30 years now. I wouldn't lose any sleep with you using new quality oil that's for sure....



15 Chev Trax AWD
02 GMC 3500 8.1/Ally DRW 4x4
00 Blazer 4.3 4x4
97/98 Civics
84 Chev K30 454EFI/T400/NP205 DRW 4x4
71 GMC Jimmy 502 RamJet/T400/NP205 4x4
08 Kawi Brute Force 750
Re: 0W40 in Air Cooled Engines? [Re: Josh48065] #5398390 04/09/20 12:11 PM
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IMSA_Racing_Fan Offline
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Air cooled engines have larger bearing clearances, use what the manufacturer recommended.
Finally got to use the manufacturer recommendation on the oil thinnies.


2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: 0W40 in Air Cooled Engines? [Re: IMSA_Racing_Fan] #5398394 04/09/20 12:14 PM
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kschachn Offline
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Originally Posted by IMSA_Racing_Fan
Air cooled engines have larger bearing clearances, use what the manufacturer recommended.
Finally got to use the manufacturer recommendation on the oil thinnies.

Surely they don't recommend higher than a 40-grade, do they?

I think it is an excellent oil for air cooled equipment with the high HTHS, just what the engine needs. What more could you ask for than Mercedes-Benz 229.5 approval as an indication of suitability?


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: 0W40 in Air Cooled Engines? [Re: kschachn] #5398410 04/09/20 12:29 PM
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IMSA_Racing_Fan Offline
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Mercedes Benz makes air cooled lawn equipment?


2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: 0W40 in Air Cooled Engines? [Re: racin4ds] #5398414 04/09/20 12:33 PM
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IMSA_Racing_Fan Offline
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Exactly.


2012 Cadillac CTS 3.0
1997 Ford Aspire
1991 Jaguar XJ6
1986 Kawasaki ZG1000 Concours
Re: 0W40 in Air Cooled Engines? [Re: IMSA_Racing_Fan] #5398431 04/09/20 01:00 PM
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kschachn Offline
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Originally Posted by IMSA_Racing_Fan
Mercedes Benz makes air cooled lawn equipment?

You make some of the oddest comments, I have no idea what you mean.

Do you know what that oil approval means and how it relates to severe operating conditions? Do you know how oil grades are listed and what the numbers mean in the grade designation?


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: 0W40 in Air Cooled Engines? [Re: kschachn] #5398441 04/09/20 01:07 PM
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bchannell Offline
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Originally Posted by kschachn
Originally Posted by IMSA_Racing_Fan
Air cooled engines have larger bearing clearances, use what the manufacturer recommended.
Finally got to use the manufacturer recommendation on the oil thinnies.

Surely they don't recommend higher than a 40-grade, do they?

I think it is an excellent oil for air cooled equipment with the high HTHS, just what the engine needs. What more could you ask for than Mercedes-Benz 229.5 approval as an indication of suitability?


Certainly depends on equip supplier & manufacturer suggestions. Kawasaki recommends 20w50 in warmer climates.

Re: 0W40 in Air Cooled Engines? [Re: bchannell] #5398447 04/09/20 01:12 PM
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kschachn Offline
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Originally Posted by bchannell
Certainly depends on equip supplier & manufacturer suggestions. Kawasaki recommends 20w50 in warmer climates.

Definitely if they specify a 50 grade I would not use a 40. Many are 30-grade however, so a 40 is suitable.


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: 0W40 in Air Cooled Engines? [Re: Josh48065] #5398449 04/09/20 01:16 PM
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CT8 Offline
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Check for increased oil consumption ,just to be safe.


2015 F150 2.7
2018 F350 6.2
Re: 0W40 in Air Cooled Engines? [Re: racin4ds] #5398452 04/09/20 01:19 PM
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kschachn Offline
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Never mind.


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: 0W40 in Air Cooled Engines? [Re: CT8] #5398479 04/09/20 01:57 PM
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Originally Posted by CT8
Check for increased oil consumption ,just to be safe.

+1

Because of oil with such a wide spread in an AIR cooled engine I would check oil level more often...

Btw I am using mostly 5w40 MB 229.5 oil in my OPE (or 10w40 in MB 229.3)


2008 Toyota Yaris 1ND-TV 1.4 D4-D Tech9 (Shell?) 5W30 C3 VW 504/507
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10W-40
Re: 0W40 in Air Cooled Engines? [Re: Josh48065] #5398485 04/09/20 02:01 PM
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walterjay Online Content
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I have used Mobil-1 0-40 in my 25 Hp air cooled Kawasaki with no problems whatsoever.

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