Another comment mentioned that it could be loose manifold bolts as well as it is a common problem on the HEMIs as well.
I don't have any warning lights on my dash. So maybe it may not be lifters at all. #Hoping.
However, if it is just manifolds, I would still check the oil, what was used and do an oil change to the Redline as well to be on the safe side.
No Codes? I wouldn't drive that, what might just be a bad lifter might eat the cam if it hasn't already. Especially if you aren't getting any codes, that means the lifter is still lifting, just with a lot of restriction, which means pressure downstream, no good.
FCA will say all day it doesnt effect longevity.... but look at where you are. lol..
No surprise there. Otherwise you are looking at liabilities which no company would want.
GM is also not exempt from these issues. And ford just sucks, i hear the Ecoboost engines have all kinds of issues.
Haven't heard anything about GM vehicles. But as for Ford, the Ecoboost engines do have issues.
All makes have their fans, willing to argue away the faults.
As for Toyota... Well, you cant argue their reliability. But at the same time. Look at the trucks? they are gross, technology in them is ancient. They really arent even that good of an off road truck anymore either.
Just outdated.
Probably hence why they have the reliability in the first place. If it ain't broke, don't fix it. Well in the case of Toyota, if it ain't broke don't update it.
By sticking with old tried and true. They have managed to keep the reliability. That's their secret. They let the others innovate, experiment and then just use the successful and long lasting ideas. Thus keeping their vehicles reliable. They basically are learning from the mistakes of GM, Ford & FCA.
Toyota is probably the only company that still builds ancient 70 series trucks for markets like Africa and Australia.. Why break a tried and true recipe? There is a huge fanbase for them there as well as aftermarket support.
However Toyota is no stranger to flaws in the Tundras as well. There have been a number of engines just suddenly failing with Tundras. Toyota's usual S.O.P. for dealing with flaws is "Deny everything, find a way to blame the customer, do nothing, public relations to make sure they keep the reliability score high and maintain the image.."
They did that with my brother's Camry. Hence why I dislike the brand. But if there was a truck other than the Ram, I would own, the Tundra would be it.