From: "Marc Wiese cardmarc@charter.net" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Renesis Oil Cooling Improvement
Date: Fri, 24 Oct 2025 07:43:08 -0500
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To: flyrotary@lancaironline.net


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That=E2=80=99s great. Which Mazda oil cooler are you using in series with th=
at cooler?
Do you know if Dennis did any internal oil mods? Jets, thermopelet, etc?
=46rom what I=E2=80=99ve read and seen there is a direct relationship betwee=
n oil temp and water temp. As you found.=20
Marc
Sent from my iPhone

> On Oct 23, 2025, at 9:50=E2=80=AFPM, Doug Lomheim rv9flyer13b@gmail.com <f=
lyrotary@lancaironline.net> wrote:
>=20
> =EF=BB=BFLast Sept. I purchased Dennis Haverlah=E2=80=99s well proven RV-7=
A with Renesis, that he brought to a Tracy Rotary Fest in 2007.  I have now f=
lown it for 65+ hrs. and one point I wanted to address was slightly high oil=
 temperatures when climbing out on a hot Summer day.  This summer I had to t=
ake action by lowering power (MAP 20), and the nose (climb at 120+ MPH) on 8=
5 degree + days, so while doing the annual condition inspection decided to t=
ry to fix that. =20

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">That=E2=80=99s great. Which Mazda oil coole=
r are you using in series with that cooler?<div>Do you know if Dennis did an=
y internal oil mods? Jets, thermopelet, etc?</div><div>=46rom what I=E2=80=99=
ve read and seen there is a direct relationship between oil temp and water t=
emp. As you found.&nbsp;</div><div>Marc<br id=3D"lineBreakAtBeginningOfSigna=
ture"><div dir=3D"ltr">Sent from my iPhone</div><div dir=3D"ltr"><br><blockq=
uote type=3D"cite">On Oct 23, 2025, at 9:50=E2=80=AFPM, Doug Lomheim rv9flye=
r13b@gmail.com &lt;flyrotary@lancaironline.net&gt; wrote:<br><br></blockquot=
e></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<meta http-equiv=
=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"><font size=3D"5" cl=
ass=3D"">Last Sept. I purchased Dennis Haverlah=E2=80=99s well proven RV-7A w=
ith Renesis, that he brought to a Tracy Rotary Fest in 2007. &nbsp;I have no=
w&nbsp;flown it for 65+ hrs. and one&nbsp;point I wanted to address was&nbsp=
;slightly high oil temperatures when climbing out on a hot Summer day. &nbsp=
;This summer I had to take action by&nbsp;lowering power (MAP 20), and the n=
ose (climb at 120+ MPH) on 85 degree + days, so while doing the&nbsp;annual c=
ondition inspection decided to try to fix that. &nbsp;</font></div></blockqu=
ote></div></body></html>=

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