It’s all marketing. In my 50 years of driving I have never used a HM oil.
Personally, I think it depends less on the engine size / configuration and more on how the vehicle is maintained, how it is driven/type of service, and the ambient conditions.Personally, I think high mileage that what constitutes high mileage is going to vary by engine. 75k miles on a 4 cylinder probably isn’t the same as 75k on a 6 cylinder. 75k on a 6 cylinder isn’t going to be the same as 75k on an 8 cylinder.
I'm glad that people don't buy products that they don't really need. You can call it apprehension if you want to. Most non-HM oils have perfectly stout add packs for the intended use. Your statement sounds like "everyone should use HM oil because it's better."I'm surprised to see the apprehension against HM oils in this thread. According to any VOAs I've seen in the past, HM oils basically just have slightly more stout dispersant add packs. That doesn't sound like a negative to me.
I'm surprised to see the apprehension against HM oils in this thread. According to any VOAs I've seen in the past, HM oils basically just have slightly more stout dispersant add packs. That doesn't sound like a negative to me.
It is better. This is a forum that is obsessed with additive packs, and HM oils typically offer more dispersants (in the name of helping to fight against existing sludge build-up) and yet people here aren't interested? If you check Walmart's site right now, regular Mobil 1 and Mobil 1 High Mileage are both the exact same price at $24.47 per jug. Why would anybody not want the high mileage version?I'm glad that people don't buy products that they don't really need. You can call it apprehension if you want to. Most non-HM oils have perfectly stout add packs for the intended use. Your statement sounds like "everyone should use HM oil because it's better."
Let me guess, it’s the 10w40?Been running Castrol Edge HM since new
Valve cover gaskets, oil pan gaskets, valve stem seals, variable valve timing solenoid gaskets, are all still a thing and still dry out and/or shrink with age. There are plenty of gaskets and seals (as opposed to sealant) in newer carsHM oils are really not that effective like they used to be when engines had gaskets everywhere. Nowadays they use sealant in place of gaskets in many of the parts. Rear main seals are one place where a HM oil might work but from a recent discussion it depends on the material used for the RMG.
If you have a older vehicle then you might get results.
Serious question, what's so special about MB 229.5 approval?I have never used HM motor oils. While they may have value,
I'm not sure I understand what you mean by apprehension. Nor do I see comments where some feel using HM oils is negative. There are many who doubt the need, or at least, the need to start using it as early as 75k miles.
From what I can see on MB approval website, HM isn't even available for MB 229.5 approved 0w-40, so it isn't even a choice. So it is hard to see the value.
Valve cover gaskets, oil pan gaskets, valve stem seals, variable valve timing solenoid gaskets, are all still a thing and still dry out and/or shrink with age. There are plenty of gaskets and seals (as opposed to sealant) in newer cars
I've been driving since 1975 and have never used HM oil. Actually my first time using synthetic was on the last OC in the Versa. I put PP 10w30 in it last OC and for the first I had to top the oil off with 1/2 quart about 2/3 of the way through this interval. When it gets changed again I'm going back to using 15-20 year old Citgo Supergard 10w40 conventional.In my 50 years of driving I have never used a HM oil.
Which OEMs?We are on different pages then. I see sealant everywhere.
229.5 is the specification for multi-grade oils that are approved by Mercedes for use in the engine in my E350. It is similar to using Dexos in a GM product, or any of the other multitude of oil specifications from other engine manufacturers.Serious question, what's so special about MB 229.5 approval?
I know it's the Mercedes cert, but what does it actually entail?229.5 is the specification for multi-grade oils that are approved by Mercedes for use in the engine in my E350. It is similar to using Dexos in a GM product, or any of the other multitude of oil specifications from other engine manufacturers.
The advantage is that I am using oils that MB has tested and approved as meeting their minimum standards for my engine. The disadvantage is there is limited availability in the U.S. of oils that meet European specifications.
A 4 cylinder engine has less power than a 6 cylinder. Less power means that it has to work harder to gain/maintain set speeds, clime hills, etc. Working harder means more heat which is tougher on the engine.What makes you say that? No matter how many piston rings their are, parts are still slowly wearing out and seals are still slowly hardening over time.