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Suggestions on HM Oil to treat consumption #4815864 07/16/18 06:44 PM
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shurguywutt Offline OP
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I have used Valvoline maxlife blend and synthetic. Didn't seem to slow consumption. What others would you recommend? I was thinking of trying Pennzoil High mileage for my next change.


2008 Pilot 2WD J35Z1 153k
Shell 5w-30
Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815866 07/16/18 06:46 PM
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Charlie2015 Offline
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VML is the best in my book. Try another brand, but move up in weight.


1998 Honda Accord EX 2.3L Auto (Sold) 214k mi
2009 Scion tC Manual (Daily Driver) 170k mi - Valvoline Maxlife 0w20
Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815875 07/16/18 06:58 PM
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umungus1122 Offline
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Look into why it's consuming. Just changing brands probably won't make a big difference.


'95 Chevy 1/2t 305 208k -NexGen Maxlife 5w-30, Wix filter
'04 Crown Vic 95k Maxlife full syn 5w-20
Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815891 07/16/18 07:16 PM
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cheesepuffs Offline
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In the Honda, Iím not sure if the Pilot was affected by this but other J series Hondas certainly were - the variable cylinder management causes oil consumption and hereís why.

When the second cylinder bank ďshuts offĒ, those cylinders cool down. This makes the piston rings contract, causing blow-by, and that is exacerbated by the fact that the heating and cooling of those combustion chambers and rings cause carbon buildup. The rings get stuck with carbon deposits, making it so that they canít seal to the cylinder wall as well, also causing blow-by.

I have this issue with my car and a real like tribologist (oil scientist) that I know outside of this forum recommended I run a high PAO oil to free up the stuck rings. I have read on this forum that PAO has zero cleaning abilities as told by armchair quarterbacks, but this is what this oil professional told me, so Iím trying it via Mobil 1 EP 0W-20 which has around 60% PAO content going off of its Safety Data Sheet. Itís too soon to tell if it worked. Previous to this change I ran Platinum HM which seemed to help but did not stop the oil loss, although for some reason consumption went up initially before dropping again with the Pennzoil. I would high reccomend running full synthetic oils in these engines to help prevent further deposits at least. And now with all the HM varieties of full synthetics you can get those seal swellers with them if so inclined.

Also, if your spark plugs havenít been done in awhile it may be a good indicator of this condition to replace them. I did mine on schedule and the plugs that came out of the rear cylinder bank were completely black and carbon fouled worse than Iíve ever seen before, while the other bankís plugs looked like new.


2008 Honda Accord Coupe V6
Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815892 07/16/18 07:16 PM
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PimTac Offline
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How long have you been running the Maxlife? It doesnít work instantly. If you have major leaks then the best thing is to fix them.

What kind of consumption are we talking about? (Quarts per xxx miles )


2017 Mazda CX5
Havoline Pro DS 0w20
Roki OEM filter.
Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815919 07/16/18 07:42 PM
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Mitsu_Joe Offline
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Well, oil is good for preventative maintenance, but it wonít rebuild your engine once damage is caused.
I figure those HM oils contain an extra portion of gasket protective additives that can make your old and dried up gaskets a bit aofter again, but they donít fix a major leak. Furthermore it should have a low NOAK to compensate for more blowby happening in a slightly more worn engine.
Is it certain that the engine burns all the oil or does it also leak?


1988 Mitsubishi Galant w/ 92k mls: Castrol GTX 15W-40
1997 Toyota Starlet w/ 120k mls: Gulf Formula G 5W-40
2003 Renault Clio w/ 70k mls: LM 5W-40
2006 MB E320CDI w/ 105k mls: Fuchs Titan 5W-30

Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815921 07/16/18 07:43 PM
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RyanY Online Content
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I currently run PP HM in my cad which previously used about a quart every 1k (just like many 1st gen CTSs with the 3.6 engine). Consumption is now relatively normal, and I haven't added any oil in over 3k. I have not tried other HM oils, so I cannot say that PPHM is better. Just that it works for me (at least for now).

My Ody runs maxlife and doesn't use any oil, but it didn't use any before using maxlife.

Last edited by RyanY; 07/16/18 07:46 PM.

2007 Cadillac CTS 3.6L >127k miles (Castrol Magnatec 5W-30 + ACDelco PF2129G)

2012 Honda Odyssey EX-L >103k miles (Pennzoil Platinum 0W-20 + Fram XG7317)
Re: Suggestions on HM Oil to treat consumption [Re: cheesepuffs] #4815936 07/16/18 07:58 PM
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JAG Offline
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Originally Posted By: cheesepuffs
In the Honda, Iím not sure if the Pilot was affected by this but other J series Hondas certainly were - the variable cylinder management causes oil consumption and hereís why.

When the second cylinder bank ďshuts offĒ, those cylinders cool down. This makes the piston rings contract, causing blow-by, and that is exacerbated by the fact that the heating and cooling of those combustion chambers and rings cause carbon buildup. The rings get stuck with carbon deposits, making it so that they canít seal to the cylinder wall as well, also causing blow-by.

I have this issue with my car and a real like tribologist (oil scientist) that I know outside of this forum recommended I run a high PAO oil to free up the stuck rings. I have read on this forum that PAO has zero cleaning abilities as told by armchair quarterbacks, but this is what this oil professional told me, so Iím trying it via Mobil 1 EP 0W-20 which has around 60% PAO content going off of its Safety Data Sheet. Itís too soon to tell if it worked. Previous to this change I ran Platinum HM which seemed to help but did not stop the oil loss, although for some reason consumption went up initially before dropping again with the Pennzoil. I would high reccomend running full synthetic oils in these engines to help prevent further deposits at least. And now with all the HM varieties of full synthetics you can get those seal swellers with them if so inclined.

Can you say whether that tribologist is a member here?
I said PAO is a lousy cleaner of engine deposits. Check the literature if you donít believe it.

Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815951 07/16/18 08:22 PM
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Leo99 Offline
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To me, once the seals are starting to harden and oil starts to leak or seep, the engine is heading to its demise. HM oils allow you to get some extra miles out of your engine. My Rav4 has seeping front and rear main seals and who knows what else. Was going through almost a quart every 500 miles on ST HM blue jug but switched to green bottle Castrol HM and that seems to stay in the crankcase a lot better. But who knows what will better for you. If can get another 100k miles by switching to HM oils without too much drama, it's a win.


Without data you're just another person with an opinion. W. E. Deming

2003 Corolla 250,000 miles (RIP)
2004 Corolla 125,000 miles
2004 Rav4 392,000 miles
2015 Camry 90,000 miles
Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815965 07/16/18 08:34 PM
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Mitsu_Joe Offline
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Well, I wouldnít even say that.
My car doesnít visibly consume any oil, the oil level stays the same through all the interval of 5000mls.
The engine is very clean inside, the old oil I drain still looks very clean. The seals are in surprisingly good condition, despite of the age, the engine is dry outside.
Because I want it to stay like that I use the Valvoline Maxlife. It contains much more ZDDP than any modern oil designed for fuel economy... This ZDDP works as a protective layer covering the critical parts e.g. the camshaft and reducing wear.
It also contains a lot of Calcium that ensures a good cleaning performance and the extra seal caring additives canít hurt a 30 year old engine as well...
I would always say those HM oils can be a very good alternative for older engines with less miles. smile


1988 Mitsubishi Galant w/ 92k mls: Castrol GTX 15W-40
1997 Toyota Starlet w/ 120k mls: Gulf Formula G 5W-40
2003 Renault Clio w/ 70k mls: LM 5W-40
2006 MB E320CDI w/ 105k mls: Fuchs Titan 5W-30

Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4815967 07/16/18 08:38 PM
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JAG Offline
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My recommendation is to do one OCI with Valvoline Prenium Blue Restore, which was designed to clean rings and pistons with esters. Get the 10W-30 version. There is only one good place online to buy it that I found. If you search well, youíll find it. Itís expensive at $71/gallon but in the grand scheme, the cost is minor. The esters should also cause the seals to swell some. After that, use some HM oil.

Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4816000 07/16/18 09:56 PM
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JeffKeryk Offline
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10w30 HM; maybe add a quart of Rotella 15w40?


2018 Tesla Model 3, Medium Range Battery
2018 Lexus RX450h
2013 Lexus GS350 F Sport
2006 Acura TSX
2001 Tundra Access Cab, 1998 Accord LX, 1968 Corvette L36 Roadster, 1965 Olds 4-4-2
Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4816022 07/16/18 10:25 PM
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I would use Castrol Edge 0/40. Good stuff and low noack. I use it in my Acura 3.7L. Runs so smooth and so does vtech. Shell AU recommend 5/30. Honda engines aren't too picky about weight of oil

Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4816044 07/16/18 11:49 PM
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Roost426 Offline
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Supertech conventional HM is doing better leakwise than Maxlife was in my Jeep.


1990 Dodge W250 5.9 Cummins - VPB 15W-40,MO-285

1986 Ford F350 6.9 IDI - ST15W-40,MC FL1995

1987 Jeep Comanche 4.0L - Mobile Super 5K HM10W-40,Fram TG8A

1993 Ford Ranger 2.3L - PP10w-30,Fram FPS8A
Re: Suggestions on HM Oil to treat consumption [Re: shurguywutt] #4816071 07/17/18 03:42 AM
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Mitsu_Joe Offline
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Maybe we should first make clear how and in what forms this oil consumption happens, we dont know how much it consumes and we donít know if it burns it or leaks somewhere. We canít tell if the consumption comes from dirt or wear, is the engine clean inside, how is the average driving profile?


If the spiston rings are sticky and the engine is dirty I would suggest running some sort of engine flush, then removing the spark plugs and soaking the cylinders in some sort of cleaner/detergent over night, the next day you suck that stuff out, change the oil for a good fully synthetic and see what happens with your consumption. If you have a dripping engine maybe try adding some Lecwec to the mixture, this contains higher concentrated leakblocking additives than any HM oil.

Many new engines have problems with burning oil due to under-engineered, sticky piston rings. As the car is quite new, I expect th seals to not be that much of a problem. I donít think a car can be that seriously worn internally at such a relatively low age/mileage unless you use it for citydriving exclusively in super high/low temperatures...


1988 Mitsubishi Galant w/ 92k mls: Castrol GTX 15W-40
1997 Toyota Starlet w/ 120k mls: Gulf Formula G 5W-40
2003 Renault Clio w/ 70k mls: LM 5W-40
2006 MB E320CDI w/ 105k mls: Fuchs Titan 5W-30

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