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#4611698 - 12/22/17 09:35 PM 15w30
Sealbilly Offline


Registered: 07/02/16
Posts: 165
Loc: EasTn
My lawn mower calls for strait 30wt oil or 10w30 if operating in cooler weather. It also says in the manual in hot weather the 10w30 could cause consumption. I have been running 10w30 rotella in it and it seems to be using a little oil but I also use it late in the year to mulch leaves so I don't want to use strait 30 wt. Would delo 15w30 be a good compromise? Any body use it?

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#4611704 - 12/22/17 09:46 PM Re: 15w30 [Re: Sealbilly]
JohnnyJohnson Offline


Registered: 10/22/09
Posts: 2767
Loc: Wet side WA
Been using Valvoline 5w-30 in my Briggs/Sears mower for three years now.


Edited by JohnnyJohnson (12/22/17 09:46 PM)
_________________________
2004 Toyota Corolla 121790
Out: QSUD 5W-30 Purolator One 5030
In: Valvoline ML 5w-30 TG4967 117530 2-8-18
2006 Duramax 74047
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73752 4-22-18

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#4611723 - 12/22/17 10:15 PM Re: 15w30 [Re: Sealbilly]
gman2304 Offline


Registered: 08/11/11
Posts: 3057
Loc: n.c.
I’ve been using Rotella 15w40, summer and fall in all my OPE for years with no consumption. YMMV


Edited by gman2304 (12/22/17 10:17 PM)

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#4611771 - 12/23/17 01:05 AM Re: 15w30 [Re: Sealbilly]
mooferz Offline


Registered: 01/30/16
Posts: 325
Loc: TX
If you can find it, that oil would be perfect for that engine.
Delo SD 15W-30 is more or less a straight SAE 30. Its cold flow properties come from being a synthetic blend, rather than using viscosity index improvers, similar to Redline's Racing 30WT- which doubles as a 10W-30 due to its use of synthetic base oils.
_________________________
2001 Lexus ES300, 235k mi, German Castrol 0w-40, Fram TG8316
1985 BMW R80RT (1L)- M1 15w-50
1993 Volvo 945 Turbo- Rotella T5 10W-30 (CJ-4)

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#4611794 - 12/23/17 04:38 AM Re: 15w30 [Re: Sealbilly]
dlundblad Offline


Registered: 09/30/13
Posts: 10049
Loc: Indiana
Consumption depends on the engine. They are all different regardless of brand, model etc.

15w30 would work, but the consumption rate is to be determined.
_________________________
03 Jeep WJ 4.0 199k Castrol Edge 10w40 HM Fram XG16
02 Volvo S60 2.4T 177k M1 0w40 Mahle OX149D
97 Chevy Blazer 4.3 145k Rotella T5 10w30 Fram TG3980


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#4611807 - 12/23/17 05:13 AM Re: 15w30 [Re: Sealbilly]
Lubener Offline


Registered: 01/22/11
Posts: 2577
Loc: N.Ohio
I use straight 30 and do a lot of fall mulching in N. Ohio throughout November. I never experienced any problems.


Edited by Lubener (12/23/17 05:14 AM)
_________________________
The "thinking" man's friend.

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#4611813 - 12/23/17 05:23 AM Re: 15w30 [Re: mooferz]
Sealbilly Offline


Registered: 07/02/16
Posts: 165
Loc: EasTn
Originally Posted By: mooferz
If you can find it, that oil would be perfect for that engine.
Delo SD 15W-30 is more or less a straight SAE 30. Its cold flow properties come from being a synthetic blend, rather than using viscosity index improvers, similar to Redline's Racing 30WT- which doubles as a 10W-30 due to its use of synthetic base oils.


Thanks I was wondering what the deal was with the 15w part. I haven't been able to find much info on it. I was also looking for a stout 30 wt oil for a chevy LS engine that will take a beating as its gonna see some drag strip use on track day. Two birda one stone.

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#4611825 - 12/23/17 05:40 AM Re: 15w30 [Re: Sealbilly]
skyactiv Offline


Registered: 03/02/13
Posts: 4405
Loc: The Midwest
Originally Posted By: Sealbilly
Originally Posted By: mooferz
If you can find it, that oil would be perfect for that engine.
Delo SD 15W-30 is more or less a straight SAE 30. Its cold flow properties come from being a synthetic blend, rather than using viscosity index improvers, similar to Redline's Racing 30WT- which doubles as a 10W-30 due to its use of synthetic base oils.


Thanks I was wondering what the deal was with the 15w part. I haven't been able to find much info on it. I was also looking for a stout 30 wt oil for a chevy LS engine that will take a beating as its gonna see some drag strip use on track day. Two birda one stone.


Use a robust oil such as Castrol 0W40. Thin for startup protection that a lot of old cars and trailer queens see often and thicker than a 30W.
The NOACK on Castrol 0W40 is under 10, it's a rare and real PAO synthetic from Europe and is proven on VW's, Audi's.... that put out a lot more HP per cubic inch than a SBC does.
_________________________
Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual

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#4611874 - 12/23/17 06:47 AM Re: 15w30 [Re: skyactiv]
dave123 Offline


Registered: 01/13/09
Posts: 2315
Loc: wi
Originally Posted By: skyactiv
Originally Posted By: Sealbilly
Originally Posted By: mooferz
If you can find it, that oil would be perfect for that engine.
Delo SD 15W-30 is more or less a straight SAE 30. Its cold flow properties come from being a synthetic blend, rather than using viscosity index improvers, similar to Redline's Racing 30WT- which doubles as a 10W-30 due to its use of synthetic base oils.


Thanks I was wondering what the deal was with the 15w part. I haven't been able to find much info on it. I was also looking for a stout 30 wt oil for a chevy LS engine that will take a beating as its gonna see some drag strip use on track day. Two birda one stone.


Use a robust oil such as Castrol 0W40. Thin for startup protection that a lot of old cars and trailer queens see often and thicker than a 30W.
The NOACK on Castrol 0W40 is under 10, it's a rare and real PAO synthetic from Europe and is proven on VW's, Audi's.... that put out a lot more HP per cubic inch than a SBC does.

The Castrol 0W40 NOACK not all that impressive if wanting a low number Amsoil ASE 10W30 comes in at a 4.0 and this oil would be my first pick.

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#4611875 - 12/23/17 06:48 AM Re: 15w30 [Re: mooferz]
JHZR2 Offline



Registered: 12/14/02
Posts: 41802
Loc: New Jersey
Originally Posted By: mooferz
If you can find it, that oil would be perfect for that engine.
Delo SD 15W-30 is more or less a straight SAE 30. Its cold flow properties come from being a synthetic blend, rather than using viscosity index improvers, similar to Redline's Racing 30WT- which doubles as a 10W-30 due to its use of synthetic base oils.


+1

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#4611904 - 12/23/17 07:36 AM Re: 15w30 [Re: Sealbilly]
Eddie Offline


Registered: 12/07/03
Posts: 9574
Loc: Florida, Cape Coral
I run 10w30 Rotella T5 in my 20 HP B&S twin. T5 is a good stout oil that is diesel rated. Ed
_________________________
CX5 Touring 2.5L :-)

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#4611912 - 12/23/17 07:45 AM Re: 15w30 [Re: Sealbilly]
4WD Offline


Registered: 09/21/10
Posts: 6415
Loc: Texas
10w30 is a good choice … put 15w40 Delvac in mine yesterday … but mainly because other oil in my stash was dedicated to upcoming OCI times …

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#4612011 - 12/23/17 09:38 AM Re: 15w30 [Re: dave123]
jeepman3071 Offline


Registered: 04/15/10
Posts: 4220
Loc: Storrs, Connecticut
Originally Posted By: dave123

The Castrol 0W40 NOACK not all that impressive if wanting a low number Amsoil ASE 10W30 comes in at a 4.0 and this oil would be my first pick.


True, but Amsoil is a real PITA because you have to order it. This is fine if you have one lawn mower that you change the oil in once or twice a year, but for most people Amsoil is not really convenient and is simply a boutique oil.

Rotella T5, T6, and Castrol 0w40 are available pretty much everywhere and is an excellent oil for Outdoor Power Equipment. WalMart, AutoZone, Tractor Supply, even some Home Depots carry it, so it is extremely easy to find and also cost effective where Amsoil is not. I'm not knocking Amsoil, it is a quality product, but until it is readily available and doesn't need to be special ordered I will consider it a boutique oil.
_________________________
2000 Jeep Cherokee 4.0L (180k) - Pennzoil 10w30, Napa Gold 1516, Magnefine trans filter
2009 BMW 328i (32k) - Castrol Edge Euro 0w40, MANN HU816X

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#4612057 - 12/23/17 10:15 AM Re: 15w30 [Re: Sealbilly]
OneEyeJack Offline


Registered: 09/14/10
Posts: 7479
Loc: S California
I have a commercial Honda push mower that about 15 years old. I use leftover 0w-30 Red Line and change it every year. I just turn the oil bottles upside down and let them drain for a week or so after an oil change on my 3 daily drivers. I've never noticed any oil consumption and that's something I would discover because I check the lever before every use.

For maintenance, I change the paper air filter as needed and clean the foam prefilter and oil it with Red Line 2-stroke oil. I've added a fuel filter and I think I've changed the spark plug a couple of times over 15 years. I add a fuel treatment with PEA to the gasoline and keep the blades sharp, the mower and engine clean and the two cables greased. I have no idea when the engine is supposed to wear out but I'll keep running it until it won't run anymore.

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#4612090 - 12/23/17 10:38 AM Re: 15w30 [Re: Sealbilly]
eljefino Offline


Registered: 06/15/03
Posts: 32656
Loc: ME
Are you just putting the 15w30 in for leaf mulching season? Or year-round? How many hours do you pile on this thing?

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