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Mobil 1 10W-30 in lawn mower engine #4631390
01/11/18 12:49 PM
01/11/18 12:49 PM
Joined: Nov 2004
Posts: 75
Orlando, FL
perryg114 Offline OP
perryg114  Offline OP
Joined: Nov 2004
Posts: 75
Orlando, FL
I just bought a Sears rider with a 21 HP Briggs in it. I plan on mowing 3 acres with it so it will get some use. Would it hurt to run Mobil 1 10W-30 in it? I have some old Delo 400 non-synthetic diesel oil as well. Most of the time I run mineral oils in push mowers but this one is a little more expensive so I want it to last. I was worried the 10W-30 was too thin. I have gotten rid of most of my cars and trucks that used 10W-30 so I have several 5 qt jugs of M1 laying around.

Perry

Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631395
01/11/18 12:57 PM
01/11/18 12:57 PM
Joined: Oct 2009
Posts: 3,218
Wet side WA
JohnnyJohnson Offline
JohnnyJohnson  Offline
Joined: Oct 2009
Posts: 3,218
Wet side WA
I use my synthetic left overs up in my mower and I change it out a couple times a season. My plug has almost stop fouling completely.


2004 Corolla 124786
Out: VML 5w-30 TG4967 OCI 5007 Miles
In: EDGE EP 5W-30 Bosch 3311 122537 7-18-18
2006 Duramax 74277
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 74705 4-22-18
Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631397
01/11/18 12:57 PM
01/11/18 12:57 PM
Joined: Oct 2014
Posts: 11,845
Idaho
CT8 Offline
CT8  Offline
Joined: Oct 2014
Posts: 11,845
Idaho
DELO 15W-40 oils are used in $500,000.00 engines. Mobil 1 oils are great as well use what ever oil you feel like . Do an early oil change to get the sparkles out of the oil keep the air filter and intake sealed, do change the trans oil . change the oil regularly and the mower will lastand last.


2015 Ford F150 2.7
2018 Ford F350 6.2
Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631399
01/11/18 01:00 PM
01/11/18 01:00 PM
Joined: Sep 2010
Posts: 6,998
Texas
4WD Online confused
4WD  Online Confused
Joined: Sep 2010
Posts: 6,998
Texas
Been there done that for years ~ 19 HP Sears (Briggs) on 10w30 Synthetic

Last edited by 4WD; 01/11/18 01:00 PM.
Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631401
01/11/18 01:00 PM
01/11/18 01:00 PM
Joined: Jan 2011
Posts: 1,034
Columbus Nebraska
old1 Offline
old1  Offline
Joined: Jan 2011
Posts: 1,034
Columbus Nebraska
With a full synthetic oil, I believe Briggs now spec's 5w30, so the 10w30 should be great. I have always used straight weight 30, but even I have started to use multi weight oils in my OPE now. Mostly semi or full synthetic though.


2017 Nissan Frontier 4.0 5w30
1965 Mustang 200 c/4 10w30 QS defy
1964 Ford Ranchero 302 c/4 15/40 Delo
1929 ford model A No filters, and 15/40 oil
Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631402
01/11/18 01:01 PM
01/11/18 01:01 PM
Joined: Jun 2015
Posts: 4,225
New England
Virtus_Probi Offline
Virtus_Probi  Offline
Joined: Jun 2015
Posts: 4,225
New England
I've never had a rider, but I think the manual for every mower I've owned recommended SAE30 or maybe 10W30 for the newer ones.
I'd think 10W30 would be absolutely fine for your rider unless maybe you use some accessories that add a big load on the engine...??? Or am I thinking more like garden tractor there?


2014 Forester XT, 86000 miles
Last Change;
M1 5W30 d1G2
Tokyo Roki 15208AA170 filter
Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631403
01/11/18 01:02 PM
01/11/18 01:02 PM
Joined: Feb 2011
Posts: 6,719
Hudson, NH
LeakySeals Offline
LeakySeals  Offline
Joined: Feb 2011
Posts: 6,719
Hudson, NH
The spec is 5w30 syn, 10w30, 30w depending on climate temps on all Briggs now. I run my truck, 26 HP Sears 50" tractor, toro lawnmower, craftsman 8hp snowblower on the same oil. M1 5w30. But M1 10w30 should be fine for you in the FL climate. Just like auto engines, modern small engines are better refined with smaller tolerances that allow for thinner oils. And thats good, less power lost to small engines fighting to turn in thick oil. Starts a lot easier too!


06 Escalade 6.0L LQ9 AWD 165k M1 5w30
03 Maxima 3.5L POS 152k ST HM 10w30
Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631444
01/11/18 01:32 PM
01/11/18 01:32 PM
Joined: Jan 2009
Posts: 13,837
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,837
Illinois
I have the 21 HP briggs rider from Craftsman. It's been through 6 mowing seasons now and I use M1 10-30 as I do with all my OPE. Two years ago the head gasket blew, which is common for their engines. When I pulled the head the cyl wall was perfect and the engine was very clean. I change oil every 1 1/2 years and use the MC FL 910 oil filter. I have used M1 10-30 for around 30 years and never had an engine failure.


2007 Ford Fusion 232,000 miles
M1 0-20 EP
2017 Ford Fusion 55K
M1 0-20 EP
10,000 mile OCIs on both engines
M1 ATF and MC LV
M1 10-30 in all OPE
MC filters

Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631450
01/11/18 01:41 PM
01/11/18 01:41 PM
Joined: Dec 2016
Posts: 6,232
Waco, TX
Linctex Offline
Linctex  Offline
Joined: Dec 2016
Posts: 6,232
Waco, TX
Is the 21hp Briggs a large single?

I change a lot of connecting rods in large single-cyl OHV Briggs engines.
They just break. I hope they fixed their flaws.


"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: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631494
01/11/18 02:29 PM
01/11/18 02:29 PM
Joined: Apr 2009
Posts: 2,933
Canada
boraticus Offline
boraticus  Offline
Joined: Apr 2009
Posts: 2,933
Canada
Mobile 1 10W30 will be fine.

I had a 2002 15 h.p. Kawasaki powered riding mower. I ran whatever I had in the garage from 5W30, 10W30, 10W40, to 15W40 in it and often mixed in any combination to put enough oil together to do an oil change. The machine cut three half acre lots with a 10:1 grade every few days during summer. Going on sixteen years old and still running strong.

A word of advice:

Keep the trans-axle cooling fan clear of debris. If you don't you'll cook the trans-axle. My neighbour and I bought exactly the same brand new Husqvarna 15 h.p. machines at the same time. He didn't blow out the dried grass that collected on and around the trans-axle cooling fan. He cooked the trans-axle in 2010. So far, my machine has lasted twice as long with the original trans-axle. By the way, his engine was still running great and it also didn't receive the same level of maintenance that mine did. Nonetheless, the Kawasaki engine was still running well despite his negligence.

I wouldn't sweat the oil to be used as long as it's decent quality and within the manufacturers specifications.

Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631544
01/11/18 03:14 PM
01/11/18 03:14 PM
Joined: Feb 2011
Posts: 6,719
Hudson, NH
LeakySeals Offline
LeakySeals  Offline
Joined: Feb 2011
Posts: 6,719
Hudson, NH
Lol tig..


06 Escalade 6.0L LQ9 AWD 165k M1 5w30
03 Maxima 3.5L POS 152k ST HM 10w30
Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631642
01/11/18 05:23 PM
01/11/18 05:23 PM
Joined: Jan 2008
Posts: 382
WV
bchannell Offline
bchannell  Offline
Joined: Jan 2008
Posts: 382
WV
Im as anal about oil as the next guy, (the next guy on here), and use Delo syn in my JD 425, but really, for Briggs, Tecumseh, kohler, Onan, kawi etc, i really think you could walk into an auto parts store and throw a dart in the oil section, and use what you hit, and never have a problem. Ive seen old Briggs run on nearly water, never changed, and they just keep pounding.
Now, all i gotta do is convince myself to just do it!!!

Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631653
01/11/18 05:40 PM
01/11/18 05:40 PM
Joined: Feb 2008
Posts: 4,727
Texas
FZ1 Offline
FZ1  Offline
Joined: Feb 2008
Posts: 4,727
Texas
I use the M1 10-30 in my Honda mower ...runs nice.

Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631677
01/11/18 06:11 PM
01/11/18 06:11 PM
Joined: Sep 2009
Posts: 463
indiana
dakota99 Offline
dakota99  Offline
Joined: Sep 2009
Posts: 463
indiana
I use Mobil 1 0w40 in my 21hp craftsman rider and it works just perfect, never moves on the dipstick. 10w30 would be just the same I imagine.

Re: Mobil 1 10W-30 in lawn mower engine [Re: perryg114] #4631756
01/11/18 07:36 PM
01/11/18 07:36 PM
Joined: Dec 2003
Posts: 9,801
Florida, Cape Coral
Eddie Offline
Eddie  Offline
Joined: Dec 2003
Posts: 9,801
Florida, Cape Coral
I use 10w30 T5 in my B&S 20HP twin. !0W30 works just fine with these engines Ed


CX5 Touring 2.5L :-)
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