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High Milage Oils on Low Milage Engines #4817875 07/19/18 07:50 AM
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PWMDMD Offline OP
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Most of what Iíve read about high mileage oils is that they contain seal conditioners and often more detergents and they can safely be used on low and high mileage vehicles. Additionally, many of the recommendations on here with respect to HM oils are made after someone posts about a problem with oil consumption on a high mileage motor.

Right now Mobil 1 EPHM is the same price as Mobil 1 EP and since I have a car with 5K miles and a car with 60K miles it would be easier to stock one version. Is there any value to running high mileage oil on a low mileage engine continuously over itís lifetime (Ex. to keep the seals conditioned and never allow them to deteriorate in the first place or to keep the engine cleaner due to high levels of detergents)? If so why doesnít everyone do this - are there any downsides?


Current: 2019 Lexus RX 350 (Mobil AFE 0W-30 and Toyota OEM Filter) and 2018 Honda Pilot Touring (PP 5W-30 and Mobil 1 EP M1-110A Filter)
Re: High Milage Oils on Low Milage Engines [Re: PWMDMD] #4817882 07/19/18 07:57 AM
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demarpaint Offline
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If you don't have leaks or oil consumption I wouldn't use a HM oil. A good oil has all the additives needed to properly protect and maintain an engine in good condition. If/when you have problems then give a HM oil a shot. I have a vehicle over 30 years old now, and it has never seen a drop of HM oil. At the moment I have no issues that would warrant it. Having said that you can use a HM oil in a brand new car if you desire to.


God Bless Our Troops

Re: High Milage Oils on Low Milage Engines [Re: demarpaint] #4817894 07/19/18 08:08 AM
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JohnnyJohnson Offline
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Originally Posted By: demarpaint
If you don't have leaks or oil consumption I wouldn't use a HM oil. A good oil has all the additives needed to properly protect and maintain an engine in good condition. If/when you have problems then give a HM oil a shot. I have a vehicle over 30 years old now, and it has never seen a drop of HM oil. At the moment I have no issues that would warrant it. Having said that you can use a HM oil in a brand new car if you desire to.


Why? I've used it off and on since my Corolla has had 66K miles on it has never been an issue sometime HM oils are what's on sale. I've been doing this for over 6 years now. I don't always use it when I've switched back to non HM oil there has never been an issue.


2004 Corolla 140080
Out: Havoline Pro DS 10w-30 Purolator PureOne 10-29-19 136457
In: Pennzoil Platinum HM 5W-20 ST 4386
2006 Duramax 77077
Out: T6 5W-40 XG9100 73909
In: Rotella Dino PH9100 11-3-19
Re: High Milage Oils on Low Milage Engines [Re: JohnnyJohnson] #4817899 07/19/18 08:12 AM
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demarpaint Offline
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Originally Posted By: JohnnyJohnson
Originally Posted By: demarpaint
If you don't have leaks or oil consumption I wouldn't use a HM oil. A good oil has all the additives needed to properly protect and maintain an engine in good condition. If/when you have problems then give a HM oil a shot. I have a vehicle over 30 years old now, and it has never seen a drop of HM oil. At the moment I have no issues that would warrant it. Having said that you can use a HM oil in a brand new car if you desire to.


Why? I've used it off and on since my Corolla has had 66K miles on it has never been an issue sometime HM oils are what's on sale. I've been doing this for over 6 years now. I don't always use it when I've switched back to non HM oil there has never been an issue.


It won't hurt the car. As I said he can use it in a new car if he chooses too. I never bothered with HM oils, I was always able to get deals on the others, and never felt the need for a HM oil. There's nothing wrong with what you're doing either. Different strokes for different folks.


God Bless Our Troops

Re: High Milage Oils on Low Milage Engines [Re: PWMDMD] #4817903 07/19/18 08:15 AM
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buster Offline
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I talked to Valvoline's lead chemist years ago about this. He claims you can use a HM oil in a new car and in fact it states that on MaxLife's PDS. Mobil will tell you not to use a HM oil until you need one. I believe seal conditioners that Valvoline uses condition the seals to help restore them by making them more pliable. Some have claimed they cause seals to swell. Valvoline will deny that. I don't know the answer to that. There could be more than one type of seal conditioner. I do not see any issues using a "modern" HM oil in a new car. I personally would wait until the car is older, however, some do believe that by using a HM before you see leaks helps keep the seals in better shape. All oils have seal conditioners, HM oils just have more.

Re: High Milage Oils on Low Milage Engines [Re: PWMDMD] #4817925 07/19/18 08:34 AM
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If I was allowed to change my own oil without the condo gods descending on me with wrath I'd probably buy one of those new cheap synthetics.

As it is now, I find MaxLife blend worth the extra $10 or so if I get the right coupon at my oil change place and have had very good luck with it on lower mileage cars--think it's get a better add pack than VWB. My "bought from Hertz and pray" Soul is doing well with MaxLife @ 44,000 mi. Nothing scientific to base it on but I'm planning on doing 6000 mile change intervals with MaxLife but might drop it to 5000 with VWB.


2017 Kia Soul+ Valvoline Daily Protection 5w30+ a bit of Harvest King syn 5w30-- 75,000 miles
Re: High Milage Oils on Low Milage Engines [Re: buster] #4817941 07/19/18 08:51 AM
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Garak Offline
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Originally Posted By: buster
I talked to Valvoline's lead chemist years ago about this. He claims you can use a HM oil in a new car and in fact it states that on MaxLife's PDS. Mobil will tell you not to use a HM oil until you need one.

Valvoline MaxLife has been SN/GF-5 for some time, whereas M1 HM has used more dated specs. It's interesting to note, though, that Mobil Super 2000, the HM oil that Mobil has had here for years, has always been ILSAC rated, at least since SM/GF-4 days.


Plain, simple Garak.

2008 Infiniti G37 - Shell ROTELLA T6 Multi-Vehicle 5w-30, Wix 57356
1984 F-150 4.9L - Quaker State GB 10w-30, Wix 51515
Re: High Milage Oils on Low Milage Engines [Re: demarpaint] #4817951 07/19/18 09:01 AM
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Zee09 Offline
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Originally Posted By: demarpaint
Originally Posted By: JohnnyJohnson
Originally Posted By: demarpaint
If you don't have leaks or oil consumption I wouldn't use a HM oil. A good oil has all the additives needed to properly protect and maintain an engine in good condition. If/when you have problems then give a HM oil a shot. I have a vehicle over 30 years old now, and it has never seen a drop of HM oil. At the moment I have no issues that would warrant it. Having said that you can use a HM oil in a brand new car if you desire to.


Why? I've used it off and on since my Corolla has had 66K miles on it has never been an issue sometime HM oils are what's on sale. I've been doing this for over 6 years now. I don't always use it when I've switched back to non HM oil there has never been an issue.


It won't hurt the car. As I said he can use it in a new car if he chooses too. I never bothered with HM oils, I was always able to get deals on the others, and never felt the need for a HM oil. There's nothing wrong with what you're doing either. Different strokes for different folks.



No issue with demars response. Why put a fix to it if it ain't broke.
He said he never felt the need to use it. I haven't yet either but that's not saying it will destroy your engine.
Sometimes it is so cheap I've been tempted to use it in OPE.


"If I walked on water, they'd say I couldn't swim."
Re: High Milage Oils on Low Milage Engines [Re: Zee09] #4817955 07/19/18 09:04 AM
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SatinSilver Offline
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Originally Posted By: Zee09
No issue with demars response. Why put a fix to it if it ain't broke.
He said he never felt the need to use it. I haven't yet either but that's not saying it will destroy your engine.
Sometimes it is so cheap I've been tempted to use it in OPE.


Any thoughts on Supertech HM oil or just regular Supertech oil?

Re: High Milage Oils on Low Milage Engines [Re: buster] #4817979 07/19/18 09:43 AM
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If you look at the back of a bottle of Valvoline full syn high mileage, the way they rate their oils, the high mileage oil has better wear protection. That alone would cause me to use the HM version of full syn Valvoline over the non-HM. Why would they do that anyway? I mean make the HM version better on wear protection? Why would you want their best available anti-wear after 75,000 miles?

Re: High Milage Oils on Low Milage Engines [Re: PWMDMD] #4817981 07/19/18 09:47 AM
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If I had a new vehicle that took conventional oil, then I would be highly tempted to use VML from day one. It would never develop any leaks, right?


1998 Honda Accord EX 2.3L Auto (Sold) 214k mi
2009 Scion tC Manual (Daily Driver) 170k mi - Valvoline Maxlife 5w30
Re: High Milage Oils on Low Milage Engines [Re: SatinSilver] #4817982 07/19/18 09:48 AM
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Get the full syn or full syn HM Supertech. It's only about a dollar or 2 more ($15.65 around here for 5 qts) for the 0W-20, 5W-20, or 5W-30 versions and is Dexos 1 Gen2 rated, so probably a really decent oil for cheap at 5000 mile oci or more.

Re: High Milage Oils on Low Milage Engines [Re: PWMDMD] #4817998 07/19/18 10:14 AM
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As I have said before on this site. I don't buy oil when it's on sale. I buy it when I need it. I used to "hoard" oil when it was on sale and I ended up with at least 20 gallons I didn't know what to do with. Gave most of it away to my kids and used the rest in lawn equipment.

I think I've gotten smarter? :-) I buy oil on specs and HM oils carry the specs I'm looking for. After a lot of reading I'm not impressed with ILSAC and API standards. ILSAC goes a little farther than API by a little. Both API and ILSAC oils are CAFE driven and are on the lighter side (ASTM D445 and HTHS). Something my old junks with high mileage don't appreciate.

I've sided with ACEA specs which are, mostly, driven by engine manufacturers (like ILSAC but more extensive). The 5w-30 I use in my sig is an A5/B5 and the 10w-30 is an A3/B3 ACEA oil. Very impressive to me.

Would I use a HM oil in a new vehicle. Absolutely if it has the ACEA specs I like.


2005 Ranger 3.0 - SuperTech Syn 5w-30/Motorcraft
2000 4Runner 3.4 - SuperTech Syn 5w-30/Toyota
1997 B2500 Van 3.9 - M1 HM 10w-30/Mopar
1993 F150 4.9 - SuperTech Syn 5w-30/Motorcraft
Re: High Milage Oils on Low Milage Engines [Re: Zee09] #4818015 07/19/18 10:45 AM
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PWMDMD Offline OP
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Originally Posted By: Zee09
Originally Posted By: demarpaint
Originally Posted By: JohnnyJohnson
Originally Posted By: demarpaint
If you don't have leaks or oil consumption I wouldn't use a HM oil. A good oil has all the additives needed to properly protect and maintain an engine in good condition. If/when you have problems then give a HM oil a shot. I have a vehicle over 30 years old now, and it has never seen a drop of HM oil. At the moment I have no issues that would warrant it. Having said that you can use a HM oil in a brand new car if you desire to.


Why? I've used it off and on since my Corolla has had 66K miles on it has never been an issue sometime HM oils are what's on sale. I've been doing this for over 6 years now. I don't always use it when I've switched back to non HM oil there has never been an issue.


It won't hurt the car. As I said he can use it in a new car if he chooses too. I never bothered with HM oils, I was always able to get deals on the others, and never felt the need for a HM oil. There's nothing wrong with what you're doing either. Different strokes for different folks.



No issue with demars response. Why put a fix to it if it ain't broke.
He said he never felt the need to use it. I haven't yet either but that's not saying it will destroy your engine.
Sometimes it is so cheap I've been tempted to use it in OPE.


I guess what Iím asking is why let it break in the first place? All things being equal as far as price why let the seals lose elasticity with increased mileage and then use try and use something to remedie the problem if you can just use the remedie at no additional cost the entire life of the engine?

Unless Iím missing something here?

Last edited by PWMDMD; 07/19/18 10:50 AM.

Current: 2019 Lexus RX 350 (Mobil AFE 0W-30 and Toyota OEM Filter) and 2018 Honda Pilot Touring (PP 5W-30 and Mobil 1 EP M1-110A Filter)
Re: High Milage Oils on Low Milage Engines [Re: PWMDMD] #4818025 07/19/18 11:02 AM
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Any properly API rated oil should be fine for your engine.

Pure speculation on my part, but a HM oil is supposedly to be used on a HM engine; by definition an engine with a limited future life expectancy. I wonder if the additive package has some properties that would be expected to be appropriate for no more than, perhaps, another 100K miles or less. No idea if there is anything to it, but it's what i would be wary of until I knew for sure.


'57 FL Straight 50 wt
'90 Miata 1.8L w/Rotrex Supercharger [Mobil1 0W-40]
'96 Ram 1500 [3.7L Mobil1 0W-20 / 1L 15W-50]
'01 PT Cruiser [Mobil1 0W-40]
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