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10w40 Motorcycle Oil in Pressure Washer? #4806722
07/06/18 10:28 AM
07/06/18 10:28 AM
Joined: May 2018
Posts: 42
USA
ThunderOne Offline OP
ThunderOne  Offline OP
Joined: May 2018
Posts: 42
USA
My pressure washer has a Briggs 900 Series Intek engine. In my previous thread, I talked about needing to replace the carb due to the carb spewing gas everywhere. I changed the oil when I replaced the carb, and it definitely seemed like some gas had gotten in there, as oil spewed out of the fill hole. I had some PYB 5w-30 and some Valvoline 4 stroke 10w40 motorcycle oil (dino).

I decided to use the motorcycle oil, since motorcycle oil is built to operate in dirty, wet clutch environments. I know it's not energy conserving though, but has other additives in it that should make up for it, I am hoping.

The manual for this particular *engine* states that I can use up to 15w-50 (full syn) for temps between 20F-120F. The *pressure washer* manual says nothing of the sort, only recommends 5w-30 syn, SAE 30, and 10w-30, saying increased oil consumption will occur with 10w30, same as the engine manual. There was no mention of the 15w-50.

I almost exclusively use my pressure washer in the summer months, when temps exceed 90F. I am thinking I will be okay, however, I wanted to encourage some discussion on it.

Here are pictures of the engine manual:




Pictures of pressure washer manual:


Thoughts? Valvoline motorcycle dino 10w40 seems to have a SF/SG/SJ rating, which the manual says is okay.

Last edited by ThunderOne; 07/06/18 10:32 AM.
Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: ThunderOne] #4806730
07/06/18 10:43 AM
07/06/18 10:43 AM
Joined: Jul 2016
Posts: 1,658
Jacksonville, FL
FlyNavyP3 Offline
FlyNavyP3  Offline
Joined: Jul 2016
Posts: 1,658
Jacksonville, FL
The most important thing with any oil is to make sure it has plenty. High load use like on a pressure washer I verify the oil level every time I add gas to it. Either of your choices would be fine and the 10w40 motorcycle oil will have a beefier add pack than the PYB. Use with confidence.


Luke
P-3C and P-8A Maritime Weapons and Tactics Instructor, Instructor Tactical Coordinator and Mission Commander
Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: FlyNavyP3] #4806731
07/06/18 10:45 AM
07/06/18 10:45 AM
Joined: Jan 2007
Posts: 2,572
Oneida County, NY
rsylvstr Offline
rsylvstr  Offline
Joined: Jan 2007
Posts: 2,572
Oneida County, NY
Originally Posted By: FlyNavyP3
The most important thing with any oil is to make sure it has plenty. High load use like on a pressure washer I verify the oil level every time I add gas to it. Either of your choices would be fine and the 10w40 motorcycle oil will have a beefier add pack than the PYB. Use with confidence.


Agree with FlyBoy.


2013 F150 SCrew Lariat 4X4 5.0 3.55
2012 Altima SL that still vibrates.
2018 Polaris Sportsman 850 SP. Polaris fluids and filter.
Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: ThunderOne] #4806732
07/06/18 10:45 AM
07/06/18 10:45 AM
Joined: Dec 2012
Posts: 635
Washington for now
WhyMe Offline
WhyMe  Offline
Joined: Dec 2012
Posts: 635
Washington for now
i have a couple of briggs small engines. i put whatever syn extra oil i have laying around. they aren't that picky . you might consider changing the oil in the pump also

Last edited by WhyMe; 07/06/18 10:55 AM.
Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: WhyMe] #4806744
07/06/18 10:57 AM
07/06/18 10:57 AM
Joined: May 2018
Posts: 42
USA
ThunderOne Offline OP
ThunderOne  Offline OP
Joined: May 2018
Posts: 42
USA
Originally Posted By: WhyMe
i have a couple of briggs small engines. i put whatever syn extra oil i have laying around. they aren't that picky . you might consider changing the oil in the pump also

The manual "says" that is a maintenance free pump. So I'll just run it till it dies.

Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: ThunderOne] #4806750
07/06/18 11:02 AM
07/06/18 11:02 AM
Joined: Jan 2009
Posts: 13,972
Illinois
tig1 Offline
tig1  Offline
Joined: Jan 2009
Posts: 13,972
Illinois
M1 10-30 has worked great in my PW.


2007 Ford Fusion 235,000 miles
M1 0-20 EP
2017 Ford Fusion 60K
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: 10w40 Motorcycle Oil in Pressure Washer? [Re: ThunderOne] #4806751
07/06/18 11:03 AM
07/06/18 11:03 AM
Joined: Apr 2010
Posts: 49
ms
racinjason Offline
racinjason  Offline
Joined: Apr 2010
Posts: 49
ms
Originally Posted By: ThunderOne
Originally Posted By: WhyMe
i have a couple of briggs small engines. i put whatever syn extra oil i have laying around. they aren't that picky . you might consider changing the oil in the pump also

The manual "says" that is a maintenance free pump. So I'll just run it till it dies.


It doesnít matter what oil you put in the engine then....pump will die first.


Some of these, you are able to change the oil even though it says you canít.

Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: racinjason] #4806759
07/06/18 11:08 AM
07/06/18 11:08 AM
Joined: May 2018
Posts: 42
USA
ThunderOne Offline OP
ThunderOne  Offline OP
Joined: May 2018
Posts: 42
USA
Originally Posted By: racinjason
Originally Posted By: ThunderOne
Originally Posted By: WhyMe
i have a couple of briggs small engines. i put whatever syn extra oil i have laying around. they aren't that picky . you might consider changing the oil in the pump also

The manual "says" that is a maintenance free pump. So I'll just run it till it dies.


It doesnít matter what oil you put in the engine then....pump will die first.


Some of these, you are able to change the oil even though it says you canít.


I'm not sure how as I have never fiddled with the pump before. I will have to look into it. Not sure what the oil specs are for the pump. I see most common weight is 10w40. Does it have to be a special "pump oil"?

The manual says the pump is "sealed"... not sure how to even get into it, or what quantity it would need.

Last edited by ThunderOne; 07/06/18 11:10 AM.
Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: racinjason] #4806760
07/06/18 11:10 AM
07/06/18 11:10 AM
Joined: Dec 2012
Posts: 635
Washington for now
WhyMe Offline
WhyMe  Offline
Joined: Dec 2012
Posts: 635
Washington for now
Originally Posted By: racinjason
Originally Posted By: ThunderOne
Originally Posted By: WhyMe
i have a couple of briggs small engines. i put whatever syn extra oil i have laying around. they aren't that picky . you might consider changing the oil in the pump also

The manual "says" that is a maintenance free pump. So I'll just run it till it dies.


It doesnít matter what oil you put in the engine then....pump will die first.


Some of these, you are able to change the oil even though it says you canít.


yep. some have a side hole and some you remove the pump and pour out the old and add in new. mine is a remove and pour and the oil that came out of it was quite nasty. i just put in motor oil and its been working just fine

Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: ThunderOne] #4806763
07/06/18 11:13 AM
07/06/18 11:13 AM
Joined: Dec 2012
Posts: 635
Washington for now
WhyMe Offline
WhyMe  Offline
Joined: Dec 2012
Posts: 635
Washington for now
Originally Posted By: ThunderOne
Originally Posted By: racinjason
Originally Posted By: ThunderOne
Originally Posted By: WhyMe
i have a couple of briggs small engines. i put whatever syn extra oil i have laying around. they aren't that picky . you might consider changing the oil in the pump also

The manual "says" that is a maintenance free pump. So I'll just run it till it dies.


It doesnít matter what oil you put in the engine then....pump will die first.


Some of these, you are able to change the oil even though it says you canít.


I'm not sure how as I have never fiddled with the pump before. I will have to look into it. Not sure what the oil specs are for the pump. I see most common weight is 10w40. Does it have to be a special "pump oil"?

The manual says the pump is "sealed"... not sure how to even get into it, or what quantity it would need.


some will have a plastic plug . if not unbolt the pump and pour out the old oil.

Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: WhyMe] #4806771
07/06/18 11:20 AM
07/06/18 11:20 AM
Joined: May 2018
Posts: 42
USA
ThunderOne Offline OP
ThunderOne  Offline OP
Joined: May 2018
Posts: 42
USA
Originally Posted By: WhyMe


some will have a plastic plug . if not unbolt the pump and pour out the old oil.


I have a 580.752540 pressure washer... it doesn't seem to have a fill or drain plug on it. The pump is a 203901GS

Last edited by ThunderOne; 07/06/18 11:23 AM.
Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: ThunderOne] #4807165
07/06/18 08:13 PM
07/06/18 08:13 PM
Joined: Mar 2008
Posts: 5,960
South Florida
bubbatime Offline
bubbatime  Offline
Joined: Mar 2008
Posts: 5,960
South Florida
Pressure washers are high load. Motorcycle 10W40 will be fine, if you already have it.

If you have to buy oil, I'd just buy a heavy duty engine oil 15W40. Or try 20W50, you will like it.

Briggs lost a lot of commercial engines under warranty when their only recommendation was 30 weight oils. Hence the reason why they added 15W50 oil recommendation (for commercial or heavy duty use in hot temps).


17 Chrysler Pacifica Mobil 1 5W30
13 Yamaha XT250 Valv MC 10W40
10 Acura TSX 2.4 Maxlife Syn 5W30
06 GMC Sierra Nextgen 10W30


Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: ThunderOne] #4807657
07/07/18 11:39 AM
07/07/18 11:39 AM
Joined: Dec 2012
Posts: 635
Washington for now
WhyMe Offline
WhyMe  Offline
Joined: Dec 2012
Posts: 635
Washington for now
Originally Posted By: ThunderOne
Originally Posted By: WhyMe


some will have a plastic plug . if not unbolt the pump and pour out the old oil.


I have a 580.752540 pressure washer... it doesn't seem to have a fill or drain plug on it. The pump is a 203901GS


yours is probably like this one? if you remove it and it does not drain out, just take it apart like this guy to change the oil. those pumps are just valve and seals and oil

https://www.youtube.com/watch?v=RDVflnnoxPw

Re: 10w40 Motorcycle Oil in Pressure Washer? [Re: ThunderOne] #4807727
07/07/18 01:13 PM
07/07/18 01:13 PM
Joined: Dec 2014
Posts: 509
MB - Manitoba
FastLane Offline
FastLane  Offline
Joined: Dec 2014
Posts: 509
MB - Manitoba
I just use M1 10W30 on my Honda. Im sure the pump will die way before that engine with 10W30 in it.


2010 Silverado 4.8 4x4 Mobil 1 5W30 ACDelco PF48E
2002 Mustang GT 4.6 Mobil 1 5W30 MC FL-820S
1966 Cessna 150 Phillips 20W50
2013 Mercury 30hp Mystic 25W40

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