Oil temperature running high.

[ejapilot]

Hello,

This is a post that I posed on another wanderlodge forum. Trying to
get as much input and help as I can while my coach is in the shop.

Asking some questions while my coach is getting the complete service
treatment. When I drive the coach, the oil temperature readout gets
me nervous as it approaches and hangs around the 230 tick mark on
the guage (outside temp about 65 degrees). The coolent temperature
stays between 190-200 which appears normal. I am afraid that if I
were to go up a steep hill that the oil temp. would easily go higher
unless I baby it up the hill.

I am having the oil and filters changed as well as the cooling
system flushed and refilled. I asked the DD shop to check to see if
they could determine a problem with the oil cooler but they do not
see anything. They said that the cooling system appeared normal too
when they flushed it.

One observation from the shop manager was concerning the position of
the oil temperature sensor which is located on top of or very near
an oil filter. He said his experience is the oil temp sensor is
normally in the pan. He thought maybe the position of the temp.
sensor might cause the high readout. He also said the temp. guage
itself may be off.

Anyone have any thoughts or observations about this high oil temp.
readout? Anything that I could have them check into concerning it
while they have it in the shop today and tomorrow.

Thanks!

Jerry
1994 Wanderlodge WBSA
500HP Detroit 8V92
Santa Barbara

[Robert Johannesen]

Jerry,
I was also concerned about the oil temp but BB and Detroit both say that
the two cycle Detroit diesels are designed to operate at 230 degrees. When I had
my engine rebuilt, Stewart & Stevenson in Denver took the time to explain all
this to me when I asked about me installing an oil cooler in the system. They
said that there is an oil/water heat exchanger on the driver's side of the block
plumbed internally (up against the frame - cannot be removed with engine in the
frame) that basically keeps the engine oil at 230 and the water around 190 with
the correct thermostats installed. This heat exchanger in earlier 8V92s had a
"thermister valve" to keep the oil temp up to 230 that could be changed for
different temps but they discontinued that so it wouldn't be changed..
As a pilot also, I was uncomfortable with the oil temp any where over 200
degrees. I've put about 4000 miles on the new engine and it runs right at
230-240 all the time - we'll see what the oil analysis says.

Good luck, Bob & Judy Johannesen
91WLWB40 :Seldom Blue" often dirty
Argyle, Texas


ejapilot wrote:
Hello,

When I drive the coach, the oil temperature readout gets
me nervous as it approaches and hangs around the 230 tick mark on
the guage (outside temp about 65 degrees). The coolent temperature
stays between 190-200 which appears normal. I am afraid that.......
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[ejapilot]

Thank you very much for this information. Now I can drive without
worry about this!

Jerry

[Mike McMahan]

The oil temp on an 8V92 will run approx 50 degrees warmer than the
coolant temp. Mike McMahan 1989 PT40

--- In WanderlodgeForum@yahoogroups.com, "ejapilot"
wrote:
>
> Hello,
>
> This is a post that I posed on another wanderlodge forum. Trying
to
> get as much input and help as I can while my coach is in the shop.
>
> Asking some questions while my coach is getting the complete
service
> treatment. When I drive the coach, the oil temperature readout
gets
> me nervous as it approaches and hangs around the 230 tick mark on
> the guage (outside temp about 65 degrees). The coolent
temperature
> stays between 190-200 which appears normal. I am afraid that if I
> were to go up a steep hill that the oil temp. would easily go
higher
> unless I baby it up the hill.
>
> I am having the oil and filters changed as well as the cooling
> system flushed and refilled. I asked the DD shop to check to see
if
> they could determine a problem with the oil cooler but they do not
> see anything. They said that the cooling system appeared normal
too
> when they flushed it.
>
> One observation from the shop manager was concerning the position
of
> the oil temperature sensor which is located on top of or very near
> an oil filter. He said his experience is the oil temp sensor is
> normally in the pan. He thought maybe the position of the temp.
> sensor might cause the high readout. He also said the temp. guage
> itself may be off.
>
> Anyone have any thoughts or observations about this high oil temp.
> readout? Anything that I could have them check into concerning it
> while they have it in the shop today and tomorrow.
>
> Thanks!
>
> Jerry
> 1994 Wanderlodge WBSA
> 500HP Detroit 8V92
> Santa Barbara
>