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#481907 - 06/13/03 09:08 AM Best oil for lawnmowers and other small engines
Mystic Offline


Registered: 03/05/03
Posts: 7475
Loc: Colorado
What is the best oil to use in lawnmowers and other small 4 cycle engines?

I was using Sears SG rated 30 wt oil, but then I found a place where I can get Briggs and Stratton oil. But it is not labeled as meeting any requirements-only that it meets new warranty requirments. So which oil is better-the B&S oil or the oil from Sears?

Or is it better to use an automotive type oil? Auto oils are rated higher (SL) but they do not have as much Zinc.

What oils do you guys use?

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#481908 - 06/13/03 10:22 AM Re: Best oil for lawnmowers and other small engines
A. Guy Offline


Registered: 05/17/03
Posts: 51
Loc: Kansas
My company has a bunch of small engine equipment. Generators, quickie saws, compressors etc. My tool people use Castrol HD 30wt in the warmer months and switch to a 10w 30 in the cooler months. Oil is changed about every 50 hours. This has worked very well for us for years. These machines run 8 - 12 hours a day straight.

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#481909 - 06/13/03 07:31 PM Re: Best oil for lawnmowers and other small engines
mrchecker Offline


Registered: 05/13/03
Posts: 179
Loc: Newtown Square, PA
I doubt the B&S oil is any better/worse than the Sears in a lawnmower. I use whatever name brand straight 30 weight I can find cheap when I need it. Currently working on a case of Mobil dino I bought on sale 3 years ago. I used to use 10w30 because that was what my Dad always used, then I read the manual. Strange, the lawnmower doesn't need oil every time I mow anymore. I guess the Indian cheif knows better what to put in his engines than Dad does. [Roll Eyes]

[ June 14, 2003, 10:33 AM: Message edited by: mrchecker ]

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#481910 - 06/13/03 08:37 PM Re: Best oil for lawnmowers and other small engines
bretfraz Offline


Registered: 06/21/02
Posts: 2756
Loc: CarMax
I agree that 30W, when recommended, is the best overall mower engine oil. I use Schaeffer's Moly Bond 30W in my mowers and change it once a year. I don't use them when its cold (no need, obviously) so I don't need colder temp protection from a 10W-30.

http://www.schaefferoil.com/data/107.htm

For grins I've run Mobil One 10W-30 once and it seemed to work fine, no burning or consumption. So if you want to use whatever is lying around your garage, 10W-30 would work OK IMO. Otherwise I think it's best to stick to the 30W unless the mfr specifically requires something else.

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#481911 - 06/14/03 08:33 AM Re: Best oil for lawnmowers and other small engines
Mystic Offline


Registered: 03/05/03
Posts: 7475
Loc: Colorado
I bought some Chevron 30 weight oil (I have really come to like Chevron) and I put a small amount of Schaeffer's #132 and Neutra in it. Then I put this oil into my lawnmower and my high wheeled weed trimmer.

The lawnmower ran the same as before. But the weed trimmer really started to run good. The engine sounded better and it ran like a charm.

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#481912 - 06/14/03 10:58 PM Re: Best oil for lawnmowers and other small engines
cousincletus Offline


Registered: 09/25/02
Posts: 2513
Loc: Richmond, VA
I have a Billygoat leaf vacuum and use Rotella T 15W-40. I change the oil once a year and have no problems. [Cheers!]

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#481913 - 06/15/03 01:48 AM Re: Best oil for lawnmowers and other small engines
Gebo Offline


Registered: 09/18/02
Posts: 672
Loc: VA
I use Amsoil 10-30 with an Amsoil filter. I change it every fall before winter storage. Definitely overkill... [Big Grin]

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#481914 - 06/16/03 01:21 AM Re: Best oil for lawnmowers and other small engines
Pablo Offline


Registered: 10/28/02
Posts: 46654
Loc: Duvall WA - Pacific NW USA
Most of my small engines I use in warmer weather.

I run Amsoil 15W-40 HD Marine/Diesel oil in all the motors with the exception of my 2 strokes (duh), and my OHC Hondas (I use Amsoil 5W-30 in those).

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#481915 - 06/16/03 04:20 AM Re: Best oil for lawnmowers and other small engines
darrenc Offline


Registered: 12/08/02
Posts: 378
Loc: West Coast
Like Pablo, use Amsoil 15W-40 but with a 1 oz/quart dose of Schaeffer's #132 in my Honda OHC and My low-tech Briggs "Classic." Both run like a top, and neither have shown any evidence of sludge production. I also use Chevron 91 gas with a dose of Neutra 131 and a does of Fuel Power. Are they pampered or what? [Burnout]

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#481916 - 06/16/03 07:12 AM Re: Best oil for lawnmowers and other small engines
Mystic Offline


Registered: 03/05/03
Posts: 7475
Loc: Colorado
I might use Amsoil 15W-40 also if only there was a local Amsoil dealer. It is a hassle to have to order stuff and have it sent to you.

How about Mobil 1 15W-50? Would it work good as well? It is thick, but it probably flows as good as a conventional 30 wt., don't you think?

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#481917 - 06/18/03 11:48 PM Re: Best oil for lawnmowers and other small engines
47HO Offline


Registered: 11/18/02
Posts: 379
Loc: Alabama
Probably overkill, but I use the Amsoil HD 30 Diesel Oil in my B&S powered lawnmower and pressure washer. I figure it will keep the insides very clean.

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#481918 - 06/22/03 11:29 PM Re: Best oil for lawnmowers and other small engines
UncleS2 Online   content


Registered: 05/27/02
Posts: 3039
Loc: Far North East Texas
Bobzoil dino-moly straight 30.

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#481919 - 06/22/03 11:55 PM Re: Best oil for lawnmowers and other small engines
Rat407 Offline


Registered: 12/13/02
Posts: 750
Loc: North Carolina
I run 10w-30 Amsoil in my pressure washer OHC Honda engine and in my 10HP Kohlar that is in my 1977 Cub Cadet 1250 Hydra stat. Yep over kill also but makes me feel better since I run the mower wide open and we all know that the pressure washer does anyway. [Big Grin]

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#481920 - 06/23/03 01:06 AM Re: Best oil for lawnmowers and other small engines
Bror Jace Offline


Registered: 05/27/02
Posts: 4870
Loc: Saratoga, NY
Honda Harmony 214 push mower
Honda EM600 Generator
Honda EM1600 Generator
Honda/Coleman 5hp pressure washer
Honda 4518 2-cylinder 18hp tractor.
Honda ATC 200E (Big Red)
Troy-Bilt roto-tiller 8hp.

All use 15W40 oil, mostly Schaeffer (Bobzoil) Supreme 7000 but some still have Delo400 in them.

John Deere 10hp snowblower - Pennzoil Straight 40W

--- Bror Jace

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#481921 - 06/23/03 05:51 AM Re: Best oil for lawnmowers and other small engines
Propflux01 Offline


Registered: 09/26/02
Posts: 3098
Loc: Arkansastan
quote:
Originally posted by Bror Jace:
Honda Harmony 214 push mower
Honda EM600 Generator
Honda EM1600 Generator
Honda/Coleman 5hp pressure washer
Honda 4518 2-cylinder 18hp tractor.
Honda ATC 200E (Big Red)
Troy-Bilt roto-tiller 8hp.

All use 15W40 oil, mostly Schaeffer (Bobzoil) Supreme 7000 but some still have Delo400 in them.

John Deere 10hp snowblower - Pennzoil Straight 40W

--- Bror Jace

So why the 3 different oils? I can see Bobzoil in them all, but why the delo in the others? And for a Snowblower, would'nt the 15w-40 work better than a straight 40 in the type weather snowblowers are used in? I am currently running 10w-30 in my 17HP Tecumseh Rider, but was looking hard at that 15w-40. It came with 30w, and now since I used the 10w-30 it has used a slight amount, so looking for a change. Just curious why the different 3 oils. which is the best of them? [I dont know]

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