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Why the 30 at spec for lawn mowers? #4757269
05/14/18 07:17 PM
05/14/18 07:17 PM
Joined: Jul 2016
Posts: 168
EasTn
Sealbilly Offline OP
Sealbilly  Offline OP

Joined: Jul 2016
Posts: 168
EasTn
Air cooled and operation is usually in the summer. Why 30 wt?

Last edited by Sealbilly; 05/14/18 07:18 PM.
Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757278
05/14/18 07:25 PM
05/14/18 07:25 PM
Joined: Jun 2005
Posts: 5,324
North Texas
ARB1977 Offline
ARB1977  Offline

Joined: Jun 2005
Posts: 5,324
North Texas
Why not? Its worked fine in ten year old lawnmower.


2015 Tacoma 4.0L 60K (as of 02/23/18)
AMSOIL SS 0W30 / Toyota filter

2018 CRV 1.5L (as of 05/11/18)
Factory fill / Honda filter
Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757283
05/14/18 07:29 PM
05/14/18 07:29 PM
Joined: Jul 2010
Posts: 20,357
PNW
ZeeOSix Offline
ZeeOSix  Offline

Joined: Jul 2010
Posts: 20,357
PNW
No VIs, more shear stable.

Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757288
05/14/18 07:30 PM
05/14/18 07:30 PM
Joined: Jan 2017
Posts: 2,521
VW Fanboy Island
maxdustington Offline
maxdustington  Offline

Joined: Jan 2017
Posts: 2,521
VW Fanboy Island
Straight grades and 10Wx have less VII and are more apt to stay in grade.


03 Jetta AWP/09A 205k kms
Edge 0W40 + Mann 719/30
Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757293
05/14/18 07:33 PM
05/14/18 07:33 PM
Joined: Dec 2016
Posts: 7,997
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 7,997
Waco, TX
Straight 30 can handle some serious abuse.

We had an International 806 diesel go to 15,000 hours with no overhaul

Straight 30 all its life


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757320
05/14/18 07:44 PM
05/14/18 07:44 PM
Joined: Dec 2017
Posts: 3,917
SE British Columbia, Canada
Snagglefoot Online content
Snagglefoot  Online Content

Joined: Dec 2017
Posts: 3,917
SE British Columbia, Canada
Originally Posted By: Sealbilly
Air cooled and operation is usually in the summer. Why 30 wt?


Were you thinking 40 wt?


If you want the job done right......do it yourself.
Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757322
05/14/18 07:46 PM
05/14/18 07:46 PM
Joined: Sep 2015
Posts: 6,172
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline

Joined: Sep 2015
Posts: 6,172
Kalifornia Kollective
Yup, as others have said - no VII to shear down. All oil, all lube smile

No plastics to gum up a hot-spotted air cooled motor laugh


Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757342
05/14/18 08:05 PM
05/14/18 08:05 PM
Joined: Jan 2009
Posts: 14,127
Illinois
tig1 Offline
tig1  Offline

Joined: Jan 2009
Posts: 14,127
Illinois
Because a 30wt oil works great. It worked great in my 22 year old Honda walk behind mower, an 20 years in my B&S push mower and has worked great in all the rest of my OPE.


2007 Ford Fusion 239,000 miles
M1 0-20 EP
2017 Ford Fusion 65K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and Valvoline LV
M1 10-30 in all OPE
MC filters

Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757355
05/14/18 08:19 PM
05/14/18 08:19 PM
Joined: Aug 2010
Posts: 1,408
pa
benjy Online content
benjy  Online Content

Joined: Aug 2010
Posts: 1,408
pa
if you opt for a PAO or Ester 30W it actually meets the 10-30 spec WITHOUT VII's! you say just a mower but they can get very expensive + as noted air cooling especially at low speeds is minimal, unlike an air cooled motorcycle @ 50 MPH!!

Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757362
05/14/18 08:26 PM
05/14/18 08:26 PM
Joined: Mar 2013
Posts: 5,298
The Midwest
skyactiv Offline
skyactiv  Offline

Joined: Mar 2013
Posts: 5,298
The Midwest
Briggs & Stratton now recommends synthetic 5W30 in most of their engines except the Vangaurd series.
Interesting chart: http://sears.briggsandstratton.com/walk/oil.asp

I think Briggs & Stratton more or less says you can use synthetic 5W30 in old equipment.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual

Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757417
05/14/18 09:08 PM
05/14/18 09:08 PM
Joined: Feb 2003
Posts: 8,073
Jupiter, Florida
Cujet Online content
Cujet  Online Content

Joined: Feb 2003
Posts: 8,073
Jupiter, Florida
The reason is the high HTHS of a true straight 30.


People who count on their fingers should maintain a discreet silence.
Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757459
05/14/18 10:27 PM
05/14/18 10:27 PM
Joined: Feb 2013
Posts: 185
Texas
Irishman Online content
Irishman  Online Content

Joined: Feb 2013
Posts: 185
Texas
30W is the ONLY weight oil I have ever used in all of my lawn mowers.

Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757473
05/14/18 11:02 PM
05/14/18 11:02 PM
Joined: Mar 2008
Posts: 7,893
USA
slacktide_bitog Offline
slacktide_bitog  Offline

Joined: Mar 2008
Posts: 7,893
USA
I use Dollar Tree 10w30 that comes in that 16 oz bottle smile

Re: Why the 30 at spec for lawn mowers? [Re: slacktide_bitog] #4757480
05/14/18 11:19 PM
05/14/18 11:19 PM
Joined: Mar 2018
Posts: 952
Mississippi
TheLawnRanger Online content
TheLawnRanger  Online Content

Joined: Mar 2018
Posts: 952
Mississippi
Originally Posted By: slacktide_bitog
I use Dollar Tree 10w30 that comes in that 16 oz bottle smile


Who is the distributor?

Last edited by TheLawnRanger; 05/14/18 11:19 PM.

2011 Impala
2012 Colorado
Oil: 5w30 synthetic
Filters: Wix 51522 for both
Re: Why the 30 at spec for lawn mowers? [Re: Sealbilly] #4757503
05/15/18 01:40 AM
05/15/18 01:40 AM
Joined: Feb 2015
Posts: 2,595
Slovenia EU
Kamele0N Offline
Kamele0N  Offline

Joined: Feb 2015
Posts: 2,595
Slovenia EU
...could be even because they are usually splash lubricated....? But my B&S 3.5classic lawnmover still works after a 20+years on whatever in Sae40... shrug


2008 Toyota Yaris 1ND-TV 1.4 D4-D Elf FullTech FE 5w30
1997 Toyota Landcruiser KZJ95 3.0 TD Shell Rimula R6M 10w40
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