Originally Posted by RichardV6
Like it or not here is the in depth Roadster 3.7 V6 cooling system explained v2.0 innocent
laugh2 rofl

Well done Richard! thumbs

I have more information for you.
1. I have found the why of this system
2. I have a generic diagram of how it supposed to work that will make things simpler. It will also please Luddite as it does me.

1. Some years ago, the USA's EPA got involved in gases released to the environment. Though the specific sad targets of "degassing" was not automobiles per se the manufacturers were forced to radically change their automobiling cooling systems. The investigators concluded that automobiles, when venting the coolant system, also released undesirable gases. They wanted none of that. (I do not know as yet whether this is reflected in any other automobile legislation elsewhere.) This is curious because a degassing system will vent every time you fill it with coolant. There also special coolants required. Can you check in your Roadster what coolant the MMC requires? The degassing systems, however, hope to remove gases from the very rare automobile cooling venting.

(I do not know as yet whether this is reflected in automobile legislation in other nations or to what extent.)

The oil cooler, on most cars, is a separate, smaller radiator to the engine's main radiator, which maintains an oil supply at a consistent, optimal temperature. Its purpose is to cool the oil passing through the coils, thus improving the engine and the transmission's lifetime. They are normally situated in front of an engine's cooling system. Sadly, that creates the Ford engines most frequent defect, though I have never hear of this one from the Roadster group. That being said I do NOT normally mechanically track Roadsters, though I like the 3.0s very much. https://tuningpro.co/ford-3-7-cyclone-engine-problems/

Gets more interesting. There are alleged engine benefits, (throttle response, cleaner engine, better mileage, more virile libidos, in eliminating the cooling system's downsides (that is pushing exhaust fumes back into the engine). It migt explain the varying bhp one sees in these engines from regulatory regime to regime. Any Roadster person hear of a "delete kit".

Cars are sure changing!

gmg

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