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I do think it’s valuable to remain curious and avoid true conclusions regarding general statements. I drive a 2007 Honda Fit that began consuming oil around 200k miles. Is it just from engine wear and having to drive these engines at higher RPM; thereby increasing the potential for blowby? My...

Well, oil is pretty cheap when it comes to cost of ownership. Based on what the OP is considering, I give the edge to Amsoil SS and jumping up to a 30 grade as others suggest. I’m sure ESP would do the trick too, but the OP asked between Red Line or Amsoil. If ever late on an oil change, the...

Well, on that aspect I do believe Valvoline’s stated approach is to avoid overloading an oil filter. They certainly could push an oil that will clean more aggressively; such as their Premium Blue Restore not designed for use as a PCEO. Too aggressive is too aggressive. But to @tired &...

Ah, thanks for sharing, I had forgotten @wwillson ‘s experience. I recall some members noting oil consumption changes switching to R&P, that didn’t apparently have much in the filter. I suppose it isn’t related to the ring area in terms of cleanliness; as users of that oil have reported...

Cleaning that specifically is something R&P is doing and from my understanding is a more exclusive thing. Eliminating/reducing drastically oil consumption; from apparent piston ring deposit removal, seems to be a thing it’s doing and appears to be an exclusive oil for doing just that. Other...

But, again, it’s speculative in nature. Most active users that contribute do not seem to be using Amsoil SS. The engaged members actively trying HPL is noteworthy as it’s the popular forum darling; alongside R&P. Again, it’s a trend but not an actual comparison as if we’ve got carboned/sludged...

Eh, seems mostly anecdotal at best. Here’s the thing, most Amsoil Signature Series users, are usually over-maintaining their vehicles and regularly use it. As you indicated, what is there to clean? HPL getting popular and board members trying it in droves is something I don’t know if has...

Just comparing the two boutiques… HPL PP has a lower cSt at 40c and 100, so perhaps the oil in general appears to be thinner; which may help the pour point at the colder temp. (Slightly different base oil combinations along with VII, hard to know the percentages let alone the recipe) OTOH, the...

I’ll add one more important point. Even if you change oil on a boutique as frequently as the cheapest oil off the shelf, in scenarios where oil breakdown may be accelerated; and thus requiring more frequent changes…then regardless, there is the issue of how clean the oil runs. In such a severe...

Maybe $200 in a year for boutique oil twice changed; at worst? Meanwhile minimum 2 changes on cheaper oil is $30 at the above rate. So, the cost difference is; at most, $14 a month? Not a big deal to me. That’s using a typical “changes more often than sometimes necessary” model. In my vehicle...

So obviously, a boutique is only less expensive than oil on sale, the more miles that are racked up in less time and therefore when you cross a certain threshold for OOP cost differences between the two oil choices and the accompanying maintenance approaches. Still, even with more OOP you pay...

They also don’t hurt anything despite being less optimal purely from a marginal price difference. That’s pretty much the only actual knock on boutiques. Literally nothing to do with performance. You never hear it said “I’m using a cheaper oil because it performs better than the boutique oil“...

You quoted a post from months ago. Appearances at the time proved to be first impressions upon the new Purolator replacing most of its shelf space. But, who really cares? It’s a genuinely flawed item not worth its price until fixed. :)

It’s really such a small price difference, and oil isn’t just oil. The truth is there are many unknowns about true needs and what is not needed. Depends on the goals. If one wants to ensure the best possible outcome, there is no downside to boutiques or the higher priced OTS synthetics. Unless...

If your vehicle meets the criteria @Hohn spelled out, I see no downside to boutique oils with potential benefits at minimum. People spend far more money on fuel cost monthly than any oil cost in a given year or more. That’s even with spending more on boutique. Some even spend more on fuel cost...

And ultimately, it’s about the performance that matters the most.

Oil is so cheap in vehicle maintenance compared to cost of ownership elsewhere. Even boutique isn’t a big jump yearly. We’re talking at most $200 for a year supply of a boutique oil for 1 vehicle, in some cases half that. $8 or $16 a month is simply not a big deal. Run the best. Why not...

So, I take it you have the same approach to HPL or any other boutique brand?

For you owners with CD, maybe consider over-maintaining the ATF…or see if Mazda will offer a flash to disable CD. Source: https://bobistheoilguy.com/forums/threads/mazda-tsb-2-5l-with-cd-6at-3-6-cx-5-cx-30-owners-get-in-here.383441/

Wonder about Lingenfelter since they have partnered with Amsoil. 🤔