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It says Ester right on the label...so...

Most coolants are still Ethylene Glycol based. Maybe 40 years ago they were propylene glycol? But there are different testers for each as they have different density curves. I'd mix 50/50 in small bottle and see if it registers what you'd expect before relying on it. As far as water wetter, it...

It has been posted, and ridiculed. Please lock.

What's the filtration efficiency? Tough Guard would be my choice. I believe the OEM is similar in construction to a tough guard.

I think the consensus on this forum is that Top Tier is legitimate. But for gasoline.

Top Tier Diesel is a thing now, but very few brands have joined. Beyond that there are EPA standards, so all diesel in an area should be fairly similar. The difference being additives added at the terminal. https://www.toptiergas.com/diesel-brands/

Simple google search leads us to this information: https://www.castrol.com/en_us/united-states/home/castrol-story/driving-for-change/path360/cneutral.html

Even though Ascent testing was over 2 years ago its the only independent testing the general forum has been privy to. With the changes to the Fram lineup - sure there is some uncertainty there, but they claim the new media is even more efficient (specifically about the ultra). I cannot stress...

Based on the testing from Ascent its hard to believe that any filter would outperform Fram on filtration efficiency. They claim 99% at 20, but effectively were 99.9+% at 20micron. And more important they could claim 99+% at 15 micron, which no other filter could touch. The Delta P when new was...

I'm not a huge fan of British racing green and the general livery, which this doesn't really hardly deviate from. But looks fine to me. And I will be watching. Global F1 viewership is pretty stout. The other racing series are mostly worse in terms of 'livery' and/or consistency between team...

Why? Does this power get consumed locally? Its not being transmitted back to the power generating system then back out to customers. What's the equivalent loss?

How hot does it get by 9PM. That just wouldn't cut it for me, that's the hottest part of the day and I'd hate to find out how hot my house could get.

Eh, not really. Why would anyone think the FE is worse than 99% at 20micron? It doesn't say anywhere something to the contrary.

FE### is an endurance part number...so they have been tested. Regarding the comment about equivalent TG, EG I don't know what that's about. But yes, it is known that the filter is identical to Amsoil.

Exactly. Do not use additives in fully formulated coolant unless you are certain that it is A) useful and B) compatible. I wouldn't recommend it here.

The thermostat set temperature is basically your lowest operating temperature. Low-medium loads likely operates within 10-15 degrees of that min and are totally fine. Think temperatures High loads including towing will tax the system beyond that and where heat transfer of the coolant/water mix...

I think you have it backwards. More water will keep it cooler. Water is a more effective heat transfer medium. For Cummins I wouldn't go below 60% water/40% Coolant. Its not clear which coolant you intend to use, i'd be very sure to use the correct coolant for the application.

At least the new models have a tow prep package which includes "heavy duty engine cooling". Not sure exactly what that refers to, larger radiator? pump? Reservoir? But was that the case in 2014 and does yours have it?

STP Pro IVC only lists solvents and oxygenates, Later in the MSDS there is reference to triethanolamine, but without concentration mentioned I have to assume it is low and insignificant. Seems like a rather lackluster product, as most stuff from STP is. Look into comparable products from CRC or...

You haven't really indicated how you are driving the car and what climate. If you're tracking the car you might consider Fram Racing line. I think they are generally 94% at 20 micron. But for std. driving, sometimes spirited Wix (std not XP) will be fine. Fram TG, XG, Endurance will be more...