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View Full Version : The best oil to use in a Kohler CV20 motor? in SW Florida


Florida's Suncoast Lawn Care
08-11-2012, 07:07 PM
Hello,

I've been Googling this question but can't seem to find a solid answer. Should I use synthetic or conventional? 30W or 10W40 or 20W50 or ? I see the manual says 30W above 40F. Ok how about synthetic?

I know i used 20w50 in my 22HP Kohler when I had a lawn service here before. I remember the mower shop telling me to use it. But this time I figure since I can ask online it would be nice to hear some input.

I have 10w40 in it now for about the last month.

mjlcare2
08-12-2012, 10:35 PM
10w-30 for sure.. we use synthetic mobil one on everything from mowers to trucks

Landscape Poet
08-13-2012, 08:37 PM
I would suggest using whatever is recommended by your engine manufacture for that engine. Much research and development dollars have been spent most likely to ensure they give you the best advice for use on their product.

With that said my Kawi calls for SAE30 under the conditions I usually find myself in.

I have used Mobil just like mjlcare until a few months back and then I switched over to Amsoil for two cycle use and eventually for my vehicles and mowers.

This is what I currently use in the mowers. http://www.amsoil.com/storefront/ase.aspx

I have a sample waiting to go Blackstone for testing from the mowers after 150 hours of use as soon as my vehicles are ready for their change which should be coming up pretty soon (aka a month or so) and will share results here.

Florida's Suncoast Lawn Care
08-13-2012, 08:47 PM
I would suggest using whatever is recommended by your engine manufacture for that engine. Much research and development dollars have been spent most likely to ensure they give you the best advice for use on their product.

With that said my Kawi calls for SAE30 under the conditions I usually find myself in.

I have used Mobil just like mjlcare until a few months back and then I switched over to Amsoil for two cycle use and eventually for my vehicles and mowers.

This is what I currently use in the mowers. http://www.amsoil.com/storefront/ase.aspx

I have a sample waiting to go Blackstone for testing from the mowers after 150 hours of use as soon as my vehicles are ready for their change which should be coming up pretty soon (aka a month or so) and will share results here.

Very cool. Thank you. I bought two quarts of Mobile 1 10w30 today. Do you think those will be ok to use until my next change?

Landscape Poet
08-13-2012, 09:12 PM
Very cool. Thank you. I bought two quarts of Mobile 1 10w30 today. Do you think those will be ok to use until my next change?

I think Mobil 1 is a very fine oil. The only reason that I switched to Amsoil was it simply worked out to be cheaper. On the 2 cycle mix I am getting a JASO/ISO approved oil for much less than Stihl synthetic which is one of the oils in stihls own test to give quality protection...but my cost from my local NAPA is SOOOOOOO much cheaper on the Amsoil for 2 cycle mixed at 50.1 not even the 100:1 suggested and comparable if not cheaper for the vehicles.

Another thing about the Amsoil for me is that the closest NAPA dealer that offers it is less than 5 miles away and right in the middle of my town...so it is easy to obtain and I do not have to shop around for mobile 1 to be on sale.


Mobil 1 again does make a quality product

Florida Gardener
08-13-2012, 09:16 PM
M1 is fine. I use that in my mowers
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Florida's Suncoast Lawn Care
08-13-2012, 09:50 PM
M1 is fine. I use that in my mowers
Posted via Mobile Device

How many hours do you recommend before a change the oil with Mobile 1 in it after put it in? I've looked up the Amsoil video on youtube. I'm going to start running that in my trimmers and such. Were have 3 Napa parts stores around us here. I have only used my conventional oil in it for about a month now. I'm going to change to Mobile 1 10w30 tomorrow.

Florida Gardener
08-13-2012, 09:59 PM
How many hours do you recommend before a change the oil with Mobile 1 in it after put it in? I've looked up the Amsoil video on youtube. I'm going to start running that in my trimmers and such. Were have 3 Napa parts stores around us here. I have only used my conventional oil in it for about a month now. I'm going to change to Mobile 1 10w30 tomorrow.
I believe most manuals call for 100 hrs on the oil and 200 on filter. I would go with that. You will hear guys who change every 40-50 hours, which IMO is a waste of money. Same as the guys who change motor oil at 3-K miles....
Posted via Mobile Device

Landscape Poet
08-13-2012, 10:00 PM
Were have 3 Napa parts stores around us here..

The corporate owned/managed stores will not have Amsoil...a family operated store will most likely have so it might be worth your time to call and ensure the one you plan on getting it from carries it.

Patriot Services
08-14-2012, 02:20 PM
I believe most manuals call for 100 hrs on the oil and 200 on filter. I would go with that. You will hear guys who change every 40-50 hours, which IMO is a waste of money. Same as the guys who change motor oil at 3-K miles....
Posted via Mobile Device

Don't cheap out, change the filter with the oil. What's the point of running clean oil through a dirty filter. I also run 20w50 in this heat. I have a benchtop viscosity checker and the 10w30 didn't hold up well in summer.
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Florida Gardener
08-14-2012, 02:26 PM
Don't cheap out, change the filter with the oil. What's the point of running clean oil through a dirty filter. I also run 20w50 in this heat. I have a benchtop viscosity checker and the 10w30 didn't hold up well in summer.
Posted via Mobile Device

I do, I shouldn't have told him 200 on filter...20/50 huh...where did u get the viscosity gauge? I run 10-30 all year, but I know in this heat a thicker oil may be better. When do you change?
Posted via Mobile Device

Tri-City Outdoors
08-14-2012, 03:16 PM
We change our oil/filter often and use 20/50 this time of year. 10/40 or 30 in the cooler months and generally use a cheaper oil. I like the Valvoline racing oil personally. Also add some Lucas oil treatment year round.

Del9175
08-14-2012, 07:25 PM
I do, I shouldn't have told him 200 on filter...20/50 huh...where did u get the viscosity gauge? I run 10-30 all year, but I know in this heat a thicker oil may be better. When do you change?
Posted via Mobile Device

I was curious about a viscosity checker as well because I had never heard of one. After about thirty minutes of searching the net I was able to find some info on them. Turns out they don't exist.
Posted via Mobile Device

Keith
08-14-2012, 10:21 PM
I'm currently running 11.25W35 :D

I left the drain open and lost 1/2 quart of 10w30 before I noticed. The only other oil I had was some 15w50.

Patriot Services
08-14-2012, 11:04 PM
I was curious about a viscosity checker as well because I had never heard of one. After about thirty minutes of searching the net I was able to find some info on them. Turns out they don't exist.
Posted via Mobile Device

Learn how to use a search engine. Its a two vial falling ball viscometer. Mine is a military surplus from the 50's. One vial is filled with new oil, the other with used. Both balls are released at same time, when one reaches bottom the other is stopped. A scale tells you how it compares to the new. Small manual ones run 250 to several thousand for electronic models. I found mine at a garge sale. If you didn't know what it was you would look right past it. Its a fun gadget and shows how fast the heat wears down oil even with modern viscosity index improvers. I stick to 200hrs max.
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mjlcare2
08-14-2012, 11:11 PM
I was curious about a viscosity checker as well because I had never heard of one. After about thirty minutes of searching the net I was able to find some info on them. Turns out they don't exist.
Posted via Mobile Device

You spent 30 minutes and didn't find anything? I looked for 30 seconds and found dozens

carbpow
08-18-2012, 12:44 AM
I believe most manuals call for 100 hrs on the oil and 200 on filter. I would go with that. You will hear guys who change every 40-50 hours, which IMO is a waste of money. Same as the guys who change motor oil at 3-K miles....
Posted via Mobile Device

Agree. Always go with the manufacturers recommendation. While I am not a professional lawn guy I have had over 30 years experience with engines as an engineer in design and operations. When the engine is designed they figure in a safety factor so if you change your oil AND filter as recommended you'll be good. Most importantly you won't void your warranty. If push comes to shove I'd rather skip an oil change than a filter change. It's the dirt that damages the moving parts and the filter is your only defense against dirt.