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S197 Fan Shroud & Oil Cooling

Hey TMO, my 2012 3.7 has pretty high oil temps while having what I would describe as fantastic coolant temps. I have a Tiger hood on order, but as a short term fix I will be changing the mounting location of the Setrab 920 a bit to get more of it exposed to clean airflow where it is down in the lower grille; I plan to lower it a bit since the bracket I made doesn't have it sitting low enough so not enough radiator is in the air stream.

I am considering getting the GT500 Ford Racing upgraded fan shroud with the little flaps in the lower section to allow more air to flow through at speed, but I am wondering.... is it really worth the 250 bucks, or is cutting out holes in the lower section of the stock fan shroud sufficient? Has anyone tried this? Does any one have before and after data?

Cooling Fan and shroud is M-8C607-MSVT, but do the flaps even make that much of a difference vs just cutting some slots/holes in the lower section directly behind where the oil cooler will sit?

For reference, I was seeing 280+ oil temps in high 80 ambient, with coolant temps at about 210 with the stock radiator, I assume (have not actually confirmed) its the same part # as a 5.0, and being a 3.7 its producing a good bit less heat. But oil temps are concerning, I really want to bring those down a considerable amount.
 
In for info
I think Racelouvers did a little study on the fan shroud affects air flow through the radiator. I modified my stock S197 Mustang fan shroud as noted in the pic which I prefer over the GT500 flaps. I also do very little street driving though. Since my fan is stock with just 6 wider blades rather than the GT500 thinner 7 blade fan, I have considered cutshroud rear.jpg ting off 3 of the fan blades but I think opening up the shroud did make a difference in air flow. Especially, since the lower part of the fan shroud was "blocking" air flow through my Supercharger heat exchanger.
 
158
97
Exp. Type
HPDE
Exp. Level
3-5 Years
25 min. to 1½ hrs. from Sonoma (ugh... traffic!)
I think Racelouvers did a little study on the fan shroud affects air flow through the radiator. I modified my stock S197 Mustang fan shroud as noted in the pic which I prefer over the GT500 flaps. I also do very little street driving though. Since my fan is stock with just 6 wider blades rather than the GT500 thinner 7 blade fan, I have considered cutView attachment 69442 ting off 3 of the fan blades but I think opening up the shroud did make a difference in air flow. Especially, since the lower part of the fan shroud was "blocking" air flow through my Supercharger heat exchanger.
Interesting info from Racelouvers and a great mod to the fan shroud!
My car still sees 50% street duty. I'm upgrading my supercharger H/E, adding an oil cooler, keeping the A/C condenser, and ducting everything. I need some shrouding to pull air through a 4 cooler stack while in traffic and running A/C, so I bought the GT500 unit. I am considering removing the flaps and enlarging the openings a little but want to see how effective it will be as is when my mods are completed.
 

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