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Re: What's the proper oil for a push mower [Re: jayjr1105] #5389602 03/30/20 05:14 PM
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TheLawnRanger Offline
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I've always used HD 30 until this year. I'm currently using full synthetic 5w30 since I have a bunch in the oil stash. No difference so far.


2011 Impala
2012 Colorado
Oil: 5w30 synthetic
Filters: Wix 51522 for both
Re: What's the proper oil for a push mower [Re: jayjr1105] #5389618 03/30/20 05:39 PM
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ZebRuaj Offline
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I purposefully picked up a couple jugs of RGT 5w30 with the Autozone clearance and Shell rebate in preparation for the mowers I usually pick up on the curb and flip.


~I fix stuff.
Re: What's the proper oil for a push mower [Re: jayjr1105] #5389699 03/30/20 08:11 PM
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spasm3 Online Happy
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Currently running 15w 40 of various brands in my zero turn, and in my lawn boy briggs engine. Works great.


13 elantra 84k 5w30 synpwr
03 chevy avalanche 83k synpwr 5w30
17 mazda cx-5 19000 miles m1 0w30
Re: What's the proper oil for a push mower [Re: jayjr1105] #5389718 03/30/20 08:33 PM
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oldhp Offline
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Just put in QS conventional 10W40, new plug, cleaned air filter and sharpened the blade. I'm ready.
This mower has had everything from 0W20 to 20W50 Harley oil. It's at least 15yrs old. Replaced the carb once.

Last edited by oldhp; 03/30/20 08:33 PM.

"None of us are getting out here alive...drink that beer...eat that pizza...drive that Hot Rod"
"When others cut you down, remember where they came from."
"I don't run...........I just quietly wait"
Re: What's the proper oil for a push mower [Re: jayjr1105] #5393684 04/04/20 04:17 PM
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Silverado12 Offline
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FWIW I have used both Rotella T-5 10W-30 and full syn 5W-30. The 5W-30 seems to hold up better as it doesn't drain out as thin as the 10W-30.


12 Chevy Silverado ext. cab LS, 2WD 4.3 auto
18 Mustang GT 5.0 auto
07 Harley Dyna Street Bob 96 c.i. 6 sp.
00 Mustang GT auto
Re: What's the proper oil for a push mower [Re: jayjr1105] #5393699 04/04/20 04:37 PM
Joined: Nov 2004
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GMBoy Offline
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I have always and still do run Mobil 1 synthetic oil in all my OPE. Either 5w/30 or 10w/30.

Re: What's the proper oil for a push mower [Re: jayjr1105] #5393721 04/04/20 04:51 PM
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4WD Offline
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I like 5w30 synthetic in pull start
10w30 Delo or 15w40 Delvac in rider

Re: What's the proper oil for a push mower [Re: jayjr1105] #5393741 04/04/20 05:08 PM
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Triple_Se7en Offline
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Originally Posted by jayjr1105
I'm just curious what's the actual oil spec you're supposed to use in a typical push mower engine. I always thought PCMO wasn't that great for mowers because it holds all the dirt in suspension where a filter would normally clean it out but with no filters on a typical push mower engine, what's the actual proper oil to use?

Rotella T6 5W40 Synthetic


2019 Hyundai Santa Fe 2.4 GDI - Pennzoil Ultra Platinum 5w30 / OEM 35504 Filter
2020 Kia Soul X-Line 2.0 MPI - a 50-50 blend of Pennzoil Platinum HM & Pennzoil Gold 5w30 // AC Delco PF1127 Ecore




Re: What's the proper oil for a push mower [Re: jayjr1105] #5393893 04/04/20 07:27 PM
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zzyzzx Offline
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Using straight 30 weight, but in the process of switching to synthetic 5W-30.

Re: What's the proper oil for a push mower [Re: zzyzzx] #5393895 04/04/20 07:28 PM
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4WD Offline
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Should be a short process

Re: What's the proper oil for a push mower [Re: jayjr1105] #5393923 04/04/20 07:57 PM
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2strokeNorthstar Offline
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I use whatever extra I have. Never had an engine problem before something else breaks.


2001 F150 5.4L
2013 Nissan Juke Nismo
2000 Honda S2000
1998 BMW 328i
Re: What's the proper oil for a push mower [Re: jayjr1105] #5407733 04/19/20 12:01 PM
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nomas Offline
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I just purchased a Toro Recycler with a B&S engine . It came with a quart of Toro branded 30W oil .

Re: What's the proper oil for a push mower [Re: Jackson_Slugger] #5407799 04/19/20 01:08 PM
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Lubener Offline
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Originally Posted by Jackson_Slugger
Toro mounted Briggs and Stratton engines have vacillated. My father's old beater mower he bought in the mid 1990's preferred 10W-30 but said you could use SAE30. But his Toro 22" Recycler from around 2010 only says detergent SAE30 SF-or newer. I did use 10W-40 in it and noticed it did burn some, but nothing major. I picked up some VWB SAE30 on clearance at TSC for it. I preferred using multi-weight oiis like 10W-30 just for ease of starting in colder months in spring and fall. But modern GII-III SAE30's seem to flow as well as older 10W-30s with a pour point at -27C.....

If the grass is growing and needs mowing, pour point is not an issue for a lawn mower, unless you mow in January.

Last edited by Lubener; 04/19/20 01:09 PM.

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Re: What's the proper oil for a push mower [Re: jayjr1105] #5416896 04/29/20 10:08 PM
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joel95ex Offline
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in push mowers with a briggs, i've always used anything 30wt. after the original fill, i usually just use 5 or 10w-30 and have never had a problem.


95 Accord 4cyl Vtec. 500,000+miles. RIP 😢
13 sonata killed by a deer @ 156k miles
07 civic SI 179k miles PP, M1 10w-30 fram ultra
18 santa fe 55k PP 5w-30 oem filter
Re: What's the proper oil for a push mower [Re: 4WD] #5417142 04/30/20 09:38 AM
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dinofish Offline
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Originally Posted by 4WD
I like 5w30 synthetic in pull start
10w30 Delo or 15w40 Delvac in rider

Why the blends and higher weights in riders? Are you noticing more burning from synthetic 5W-30?

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