So, I've got a 2007 Mazdaspeed 6. The engine has been built with forged internals. Big turbo and dyno'ed at 600 AWD WHP. The OEM oil recommended oil is 5W-30. The engine builder recommended 10W-40, or even 15W-50. The later seems too thick to me. My performance shop recommended Motul X-Clean 5W-40. Generally speaking, 10W-40 doesn't seem too common, but Mobil 1 makes 10W-40. At the moment, I'm more thinking of 5W-40.
Over the years on various vehicles, I've used a number of "boutique" oils, like Amsoil, Redline, Royal Purple, Motul, etc. I haven't read a whole lot of threads here, but I have read some and I know that most people here generally say that the boutique oils are generally not worth the money and that the best mass market oils like Mobile 1, Penzoil Ultra Platinum are actually among the best. For my most recent change, I was going to buy the Penzoil Ultra Platinum, but the local store was out and rather than drive around, I got the Mobil 1 5W-40. (I added in 1-quart of M1 15W-50 because the car has unusually large oil capacity of 6 quarts and I had some leftover 15W-50)
I see some "sticky" threads by a vendor "High Performance Lubricants". Given that the threads were made sticky, are they BitOG partners or something? A boutique oil that is actually worth paying extra for? I see that for 5W-40, they make "Passenger Car Engine Oil", "Premium Passenger Car Engine Oil", "Premium Plus Passenger Car Engine Oil" and "Super Car Engine Oil". While presumably the "Super Car Engine Oil" is the best, it looks to meet some super-specific specifications, while the other three meet more common specifications. Though I'm not sure why they bother to make those three levels, if you are willing to pay $12/quart to get the "Passenger Car Engine Oil", seems like you might as well pay the $16/quart for the Premium Plus.
So, maybe I should buy the High Performance Lubricants Premium Plus? Or should I just stick with the Mobil 1 or Penzoil Ultra Platinum? Obviously the former would be much more expensive.
EDIT: I realized I left a very similar thread a couple of years ago. I actually have not put a whole lot of miles on it since then. Only about 10,000 miles. At the time, people said the thicker oil of 15W50 would be fine. They suggested M1 15W50. My climate is Houston, hot. We do get some freezes in the winter, but cold weather is usually short-lived. Though at the time of my previous thread, there wasn't "High Performance Lubricants" I don't think. They don't seem to make anything like a 15W50, except in their racing oils where they have a 10W50 and a 10W60.
Over the years on various vehicles, I've used a number of "boutique" oils, like Amsoil, Redline, Royal Purple, Motul, etc. I haven't read a whole lot of threads here, but I have read some and I know that most people here generally say that the boutique oils are generally not worth the money and that the best mass market oils like Mobile 1, Penzoil Ultra Platinum are actually among the best. For my most recent change, I was going to buy the Penzoil Ultra Platinum, but the local store was out and rather than drive around, I got the Mobil 1 5W-40. (I added in 1-quart of M1 15W-50 because the car has unusually large oil capacity of 6 quarts and I had some leftover 15W-50)
I see some "sticky" threads by a vendor "High Performance Lubricants". Given that the threads were made sticky, are they BitOG partners or something? A boutique oil that is actually worth paying extra for? I see that for 5W-40, they make "Passenger Car Engine Oil", "Premium Passenger Car Engine Oil", "Premium Plus Passenger Car Engine Oil" and "Super Car Engine Oil". While presumably the "Super Car Engine Oil" is the best, it looks to meet some super-specific specifications, while the other three meet more common specifications. Though I'm not sure why they bother to make those three levels, if you are willing to pay $12/quart to get the "Passenger Car Engine Oil", seems like you might as well pay the $16/quart for the Premium Plus.
So, maybe I should buy the High Performance Lubricants Premium Plus? Or should I just stick with the Mobil 1 or Penzoil Ultra Platinum? Obviously the former would be much more expensive.
EDIT: I realized I left a very similar thread a couple of years ago. I actually have not put a whole lot of miles on it since then. Only about 10,000 miles. At the time, people said the thicker oil of 15W50 would be fine. They suggested M1 15W50. My climate is Houston, hot. We do get some freezes in the winter, but cold weather is usually short-lived. Though at the time of my previous thread, there wasn't "High Performance Lubricants" I don't think. They don't seem to make anything like a 15W50, except in their racing oils where they have a 10W50 and a 10W60.
Last edited: