#Inline6

A Mazda inline-six cylinder engine developed for a rear wheel-drive-based platform has been industry knowledge since news broke in May. But new reporting from Best Car in Japan confirm that Toyota/Lexus and Mazda will share that rear wheel-drive platform and inline-six engine.

Mazda’s inline-six engine development will include Skyativ-X (gasoline) and Skyativ-D (diesel) variants, mounted longitudinally. Additionally, a 48-volt mild-hybrid electrical system and all-wheel-drive variants will be offered. The question is what this has to do with Toyota.

Dave writes:

Hello Sajeev,

I have a 2004 GMC Envoy, 4.2-liter six-cylinder, with about 123k miles that seems to be leaking coolant from somewhere around the radiator cap. Every time I come to a stop with the windows down or pull into the garage I can smell antifreeze. The radiator appears full and the reservoir seems to be maintaining a fairly consistent level of the pink stuff. It never leaks enough that I see wet spots except now and then around the cap, and even then it’s only a few drops at most. I’ve taken it to the mechanic; they double checked all the hoses and connections and even replaced the cap, but it didn’t help.

I replaced the cap a second time thinking I got a bad one, but the smell remains. By happenstance the cap I bought happened to be the exact same brand the mechanic used. I’ve attached a picture of the engine bay showing the areas where I can see dried coolant. The perplexing part to me is that, judging by the splatter pattern near the oil fill and the air filter box, some of the coolant seems to be making it to the fan. Still, I never see any wet spots leading in that direction. Do you have any suggestions?

As a side question, I have been getting an intermittent CEL with an associated P0526 code (fan speed sensor). It will come on for a trip or two and then go away on its own. Any chance the supposed coolant hitting the fan could be causing the CEL?

While in recent months TTAC has reported on the declining popularity of the four door, there are still a plethora of fast sedans in the marketplace.

In fact, the performance extracted from them was unfathomable even a generation ago. How did we end up at a 500-horsepower Audi, a 640-horsepower Cadillac and 707-horse Dodge? What were once numbers reserved for otherworldly exotics now are found in a pedestrian nameplate.

But this is no new trend, for while the current power war we’re experiencing has generated outlandish performance numbers for a mere average Joe, the recipe of sticking the most punch possible into a sedan for the masses goes back a long way.

TTAC commentator bumpy ii writes:

It’s definitely going to be used in this case. Anyway, I’m looking to pick up a fun weekend car in another 3-4 years. I like to plan ahead. Here’s what I want:

* 4 doors
* RWD
* manual transmission
* normally aspirated inline 6
* (the kicker) curb weight under 3,000 pounds
* preferably built after the Reagan administration (most everyone had their emissions stuff sorted out by then)

From what I can tell, this narrows the list down to 4 cars (in order of preference):