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Too much oil consumption #5412967 04/25/20 03:32 PM
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AJB0009 Offline OP
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I never scrolled down on this site before and saw all of these other forums. Cool.
Anyhow, I have an older (I don't even know what year, to be honest) Troy Built riding lawn mower with a 17.5 HP Briggs. It starts and runs great, no issues there. It burns a lot of oil though. It takes a full tank of gas to mow our lawn, I then have to add a quite a bit of oil too. I was always dreading rebuilding the thing (who has time?) and it dawned on me today; I wonder if there is a good additive that I could put in the oil to help slow down the consumption? I use the cheapest full synthetic high mileage oil that I can get at Wal-Mart; mainly just because it can be so darn hot here during the summer. 10W30. Back in the late 80's Restore was popular (I remember seeing the ads on TV with Neil Bonnet). Anyone have any success with anything?


13 Toyota Corolla S 1.8; Valvoline FS HM 0W20, OEM filter
12 Ford Fusion 2.5; Castrol EDGE 5W30, CQ Blue 85348
06 Toyota Tacoma 2.7; M1 HM 5W30, Wix XP
04 Ford Explorer 4.0; MC SB 5W30, MC FL820-S
Re: Too much oil consumption [Re: AJB0009] #5412969 04/25/20 03:37 PM
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CT8 Offline
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Try Restore no need for a syn oil..


2015 F150 2.7
2018 F350 6.2
Re: Too much oil consumption [Re: AJB0009] #5412985 04/25/20 04:08 PM
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krismoriah72 Offline
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Rings are likely shot.. unless air filter is clogged that can cause a really rich burn.

20w50 conventional and keep an eye on the dipstick.

Re: Too much oil consumption [Re: AJB0009] #5413003 04/25/20 04:48 PM
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ls1mike Offline
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How is your head gasket? Do you have smoke coming out of the fill hole? My 20 HP V-twin did, was using a lot of oil. Did the head gaskets, fixed it.


Mike
00 Trans Am WS6 5.7 LS1
17 Silverado 3500HD 6.0
14 Caprice PPV 6.0
15 Malibu LTZ Turbo
12 Passport TT
Re: Too much oil consumption [Re: AJB0009] #5413051 04/25/20 05:52 PM
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Ursatdx Offline
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Head gasket.
Valve adjustment at required interval.


"If there must be trouble, let it be in my day, that my child may have peace." --- Thomas Paine
Re: Too much oil consumption [Re: AJB0009] #5413397 04/26/20 07:50 AM
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Slick17601 Offline
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Get some Kendall 50 weight and run it till she blows. It might run for years.


2018 RAM Bighorn 5.7
2008 Toyota Sienna 3.5
Re: Too much oil consumption [Re: AJB0009] #5413424 04/26/20 08:32 AM
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Eddie Offline
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The B&S 17.5 HP is I believe, a single cylinder unit. I would make sure that the crankcase vent is clean and open so that there is no pressure buildup. Ed


2014 CX5 Touring 2.5L :-)
Re: Too much oil consumption [Re: AJB0009] #5413493 04/26/20 09:51 AM
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dinofish Offline
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Have you tried a different synthetic brand? To me, it seems like the oil is not reaching 30 viscosity during operation, probably due to cheap additives or whatever used to achieve the higher viscosity, and so, the oil is burning off due to being at a lower viscosity when operating at high temperatures. Try Mobil 1 or some higher-end synthetic brand with the same weight of 10W-30.

Re: Too much oil consumption [Re: dinofish] #5413537 04/26/20 10:45 AM
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kschachn Offline
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Originally Posted by dinofish
Have you tried a different synthetic brand? To me, it seems like the oil is not reaching 30 viscosity during operation, probably due to cheap additives or whatever used to achieve the higher viscosity, and so, the oil is burning off due to being at a lower viscosity when operating at high temperatures. Try Mobil 1 or some higher-end synthetic brand with the same weight of 10W-30.

What do you mean by "reaching 30 viscosity during operation"? Prior to operating temperature the oil is at a much higher viscosity than any 30-grade. It doesn't "achieve" a higher viscosity, any oil always thins as it warms up.


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: Too much oil consumption [Re: kschachn] #5413575 04/26/20 11:21 AM
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dinofish Offline
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Originally Posted by kschachn
Originally Posted by dinofish
Have you tried a different synthetic brand? To me, it seems like the oil is not reaching 30 viscosity during operation, probably due to cheap additives or whatever used to achieve the higher viscosity, and so, the oil is burning off due to being at a lower viscosity when operating at high temperatures. Try Mobil 1 or some higher-end synthetic brand with the same weight of 10W-30.

What do you mean by "reaching 30 viscosity during operation"? Prior to operating temperature the oil is at a much higher viscosity than any 30-grade. It doesn't "achieve" a higher viscosity, any oil always thins as it warms up.


MULTI-VISCOSITY OILS
"Multi viscosity oils have polymers added to a light base (5W, 10W, 20W), which prevent the oil from thinning as much as it warms up. At cold temperatures the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up, the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C, the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot."

Ok, so it won't thin as much. But I think it is thinning out more with Walmart synthetic oil, having it burn more.

Also, when was the last time OP changed oil?

Re: Too much oil consumption [Re: AJB0009] #5413709 04/26/20 12:49 PM
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jeepman3071 Offline
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I'd bet money on it being the head gasket. It is a common problem on those single cylinder OHV Briggs engines, and the first sign is excessive oil consumption. I've done close to 100 of them for customers.


1998 Jeep Wrangler Sahara 4.0L/5MT (157k) - PHM 10w30, Wix 51085
2009 BMW 328i N51 (61k) - Liqui Moly 5w40, MANN HU816X
Re: Too much oil consumption [Re: dinofish] #5413869 04/26/20 04:16 PM
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kschachn Offline
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Originally Posted by dinofish
MULTI-VISCOSITY OILS
"Multi viscosity oils have polymers added to a light base (5W, 10W, 20W), which prevent the oil from thinning as much as it warms up. At cold temperatures the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up, the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C, the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot."

Ok, so it won't thin as much. But I think it is thinning out more with Walmart synthetic oil, having it burn more.

Well hopefully you learned something from that cut-and-paste.


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: Too much oil consumption [Re: kschachn] #5413990 04/26/20 07:12 PM
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dinofish Offline
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Originally Posted by kschachn
Originally Posted by dinofish
MULTI-VISCOSITY OILS
"Multi viscosity oils have polymers added to a light base (5W, 10W, 20W), which prevent the oil from thinning as much as it warms up. At cold temperatures the polymers are coiled up and allow the oil to flow as their low numbers indicate. As the oil warms up, the polymers begin to unwind into long chains that prevent the oil from thinning as much as it normally would. The result is that at 100 degrees C, the oil has thinned only as much as the higher viscosity number indicates. Another way of looking at multi-vis oils is to think of a 20W-50 as a 20 weight oil that will not thin more than a 50 weight would when hot."

Ok, so it won't thin as much. But I think it is thinning out more with Walmart synthetic oil, having it burn more.

Well hopefully you learned something from that cut-and-paste.

Not really. I said what I said based on this. Nothing really has changed. I said in first post that oil probably has a lower viscosity at operating temperate, or, the technical term would be it 'thins' out less. I spoke of the same thing.

Re: Too much oil consumption [Re: AJB0009] #5414236 04/27/20 05:26 AM
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Lubener Offline
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Run 20w-50. No chemical in a can is going to put new metal where it has worn off. Restore is just a can of lead, it is just snake oil.


The "thinking" man's friend.
Re: Too much oil consumption [Re: Lubener] #5414276 04/27/20 06:46 AM
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Vladiator Offline
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Originally Posted by Lubener
Run 20w-50. No chemical in a can is going to put new metal where it has worn off. Restore is just a can of lead, it is just snake oil.

Copper, Silver, and Lead to be exact. It works, but gotta add some to every oil change. So 20w50 makes more sense financially. In my worn out mower Quiksilver 25w-40 did the trick with reducing oil consumption for about 5 years before the mower completely died.


0W20 in summer at Death Valley is as good as 25w70 in winter at Alaska. Both can be done, neither is good for the engine long term. Oil grade is chosen by CLIMATE and OPERATING CONDITIONS.
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