Cool Collar, 12% reduction in oil temperature Options

[thomasotten]

What do you think? Gimmick? I find the 12% figure a little hard to believe. Maybe they were just measuring inlet/outlet temperature of the filter, not OVERALL oil temperature.

(IMG:http://content.madirect.com/img300/fr2423.jpg)

From the Tweeks website:

Tests have revealed a 12% reduction in oil temperature thanks to the Cool Collar, a finned aluminum cooler that increases the surface area by four times, allowing it to radiate heat faster and more efficiently. Unit fits all air and water-cooled Porsche oil filters with a simple slip-on, clamp down installation.

[gregrobbins]

Just came across this item and always interested in cooler oil. So did a little searching: Here is what the maker is saying on their web site.

link

Air Cooled Engine (Road Test)

The test vehicle used was a 1978, 911SC Porsche, equipped with a carrera style oil cooler. The car was driven 65 MPH on an 85 degree day for approximately 35 miles. The car was then stopped and an I.R. thermometer was used to check the temperatures at various points along the oil lines, tank and cooler. Also, the reading on the dash oil temperature gauge was noted. An average temperature of 220 degrees was logged.

A Cool Collar Oil Cooler was then installed on the oil filter, and testing resumed over the same course and speed. At the end of the 35 miles, the car was stopped and all the same measurements were repeated. The temperature readings showed an average of 208 degrees, a reduction of 12 degrees.

Summary: Our calculations show a 9% temperature drop above ambient.

AND

Test Results: Laboratory Test

Castrol GTX 10W30 motor oil was heated to a temperature of 220ºF, and pumped simultaneously through two identical oil filters. One oil filter had a Cool Collar attached, the other filter did not. A fan was used to direct seventy degree F. ambient air over both oil filters at a velocity of fifty miles per hour. The oil exiting the filter having the Cool Collar installed indicated a "heat removal" of two degrees per minute. Whereas the oil temperature exiting the filter without the Cool Collar showed no change. (Typically and automotive engine passes all the oil through the filter more than once per minute).

Summary: With a constant heat source applied to the oil, the temperature dropped to 202ºF. (from 220ºF.) within five minutes. This translates to a 12% temperature decrease of the heat added to ambient temperature.

OK experts, is this real or snake oil. Cost is about $25 and even a few degrees lower oil temp is worth the investment in my mind.

They are playing with the math. 12 degrees is only 5.45% of 220. Still, lower temps are better.