8V92 Oil & Water Temps running high after oil change.

[David Carrol]

Our 8V92T Oil and water temps have been consistently very close to the same (i.e. water 185 - oil 185) while we have owned the coach. Since the last oil and filter change the oil temp is now 10-15 degrees higher than the water temp (i.e. water 185 - oil 200-210). I am wondering why? Would it be the wrong oil was used, is something getting ready to let go in the engine itself? I am getting ready to depart on a month long journey and would really like to know if I have something that needs to be addressed in the near future or NOW.

Thanks for any info that may be available or especially if you have encountered a similar condition.

[NewellCrazy]

Hi David,

some oil filters will cause oil temps to rise up about 15 degrees. Check your filter and the oil cooler with a IR gun against your gauge

[The Newell]

I made a phone call David and was told to check the top of your oil filter base for a large nut on top some models had what was called a Thermatic oil control valve but I think 1988 was the last year for it but you never know so don't quote me on that. If you have that valve it may need servicing. I was told by a DD repair facility the only time to worry about the oil temperature is when its running over 230 degrees for long periods of time

[prairieschooner]

What Oil was used? We should be using CF-2 for our 2 Strokes.

[David Carrol]

The oil was the same straight 40 weight I have been using as had the previous owner. I picked up a case lot and keep it on board. The engine does not use oil for which I am glad. I just like having some on board so I don't have to go hunting since most of the truck stops I've been at only seem to carry the multi-viscosity grades. The water temps have been consistent since I bought the coach. That was what peaked my interest when I saw the oil temps going higher. Yes there was a correlation with the temp differentials and the oil change. I should have listened to the shop manager and not changed the oil. I am still adjusting to some of the higher mileage intervals on maintenance items such as the distance between oil changes. I had about 12,000 on the old change and was told not to worry about it for another 12,000. I felt better changing it and now the temps are different.

Thanks again for the info. I'm open to any more suggestions that may be out there.

[Chester B. Stone, Jr.]

You may want to do a little research. I ran two marine Detroit 6-71s for many years on an oil designed to run only in Detroit 2 cycle engines. The oil was Delo 100 (not 400), 40w.

[David Carrol]

Chester,

When I buy chevron its delo 100 if not then always its equivalent.

[prairieschooner]

Just wanted to be sure that you were using an Oil that is specific to a 2 Stroke. I checked with Napa and they could not get me Delo 100!! They tried to sell me Delo 400 and said that it was the interchange. It is still up to us to be sure that were are using the recommended fluids.
We cannot trust anyone!

[Chester B. Stone, Jr.]

Through the years, I have purchased my Delo 100 from Chevron distributors in 5 gallon pales. I now have DD 60 series and run Delo 400LE 5w40 and it is only $20 per gallon at Walmart. This is a synthetic oil, but Delo 400LE 15w40 is NOT synthetic.