REFLECTOR: Oil Type

[Scott Derrick]

Will it fit with out a lot of modification into the place the regular
nose mounted cooler?

Scott

aminetech at bluefrog.com wrote:
> Thanks,
>
> My oil temp peaked at 113 C while flying in the South, 92 C flying NY-OSH.  I'm looking at a second cooler, a 2 pass stewart warner here at OSH.  They say it will cool 20% more.  The oil vendor told me that the multi grade had a higher viscosity at high oil temps.  I'll question him some more on that.
>
> John
>
> --- tomcat05 at comcast.net wrote:
>
> From: Tom <tomcat05 at comcast.net>
> To: reflector at tvbf.org
> Subject: Re: REFLECTOR: Oil Type
> Date: Mon, 27 Jul 2009 15:52:43 -0400
>
> How hot is your oil?? Have you gone the 2nd cooler route? Anyhow, multi 
> vis is a mistake at high temps (unless it is a synthetic which you can't 
> really use with leaded fuels). The base oil in multi wt is the lower 
> number, as it wears the high vis (top number) decreases. If you live in 
> a warm climate there is very little benefit to multi wgts as cold starts 
> are their best feature. Going to 120 (60 wght) is possible but if you're 
> uncomfortable with your oil temps don't give up on trying to fix.
> My plane has updraft cooling, had only one cooler and very small cooling 
> inlets when I first got it. I played with various things for several 
> weeks to get the oil temps down. I wound up getting a 5 row stewart 
> warner as a 2nd cooler and was able to place it on the top baffling. 
> Initially I blasted air to it with a 3 inch duct shared off of induction 
> air via a Y. While later working on hot CHTs I found that the ducting 
> wasn't necessary as there was plenty of air flow through the cooler (hi 
> pressure/low pressure on opposite sides of the baffling). I went from 
> 235+ down to 185 with this setup. The Lycoming gurus say that the engine 
> wasn't set up to pump oil through 30 feet of rigid line. Probably why we 
> don't get much heat out of it either when it's cold. Tom
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