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Hot Engine Oil Light?

Yahoo Message Number: 61579
I have a new to us 2004 Magna (6342M) with a C-15. This afternoon we were heading up a pretty good grade, Hwy 88 out of Minden, Nv when the Silverleaf indicated a hot engine oil error. The coolant temp reached as high as 212. When we stopped the coolant dropped to 182 and the engine oil to 189 as it idled for a few minutes. We turned around and came back down to Carson City. When we were driving from Wyoming across Nevada the coolant averages 194 to a high of 210 up some grades.
Anyway, if anyone can recommend a good Cat service center in Carson City or the Reno area or other suggestions, it would be most appreciated!

Thanks!

Rich Sherman
2004 Magna 6342M

Re: Hot Engine Oil Light?

Reply #1 –
Yahoo Message Number: 61585
I WOULD NOT WORRY THAT IS A TOUGH PULL. IF THE TEMPS WERE IN THE MID TO HIGH 90'S YOU WILL GET WARM. IF I REMEMBER WHICH I PROBABLY DON'T IT IS AT LEAST 8% IN SPOTS.SAVE YOUR MONEY AND PULL IT EARLY MORNING, TURN YOUR AC OFF AND UNHOOK YOUR TOW CAR IF YOU THINK THAT WILL HELP. THERE IS NO EASY WAY OVER THE SIERRAS.

Re: Hot Engine Oil Light?

Reply #2 –
Yahoo Message Number: 61587
On my 650 HP ISX Cummins I had the hot oil light alarm come on . I checked the Faults on The ECM and there was no fault there. After contacting Silverleaf, I found that this is an adjustable setting on the Silverleaf warning system, and not the ECM. I went to the adjustable warning system area and found that the limit setting was set at 230. I moved this temp up 10 degrees to 240 and have never had a problem since. I feel that the setting by Silverleaf is too low. I found that , on monitoring the oil temp ( which I can in the scan area ) regularly gets to 220. That does not alarm me since the oil is in contact with the hottest surfaces in the engine (Piston etc ) , whereas the water is in contact with the cylinder liner and the block. The oil would easily be 10 degrees higher than 220 which is the alarm setting for the water temp in the Silverleaf. Silverleaf indicated that this is why the setting in the ALARM area of the unit is adjustable . You should see if this is adjustable in your Silverleaf.

Ron Baran 09 Magna 7025 650 ISX

Re: Hot Engine Oil Light?

Reply #3 –
Yahoo Message Number: 61599
Rich,

Ron is right on. I have a C15 in my 08 Magna. I have experienced the same issue. My Silverleaf warning was set at 210. I moved it up to 220 and still received the alarm on a long pull. The Cat people said to bump it up some more. It is now set at 230 and on hot days and long pulls I may still get the alarm. The highest I have seen is 231. I left it there to remind me to watch it. It's a simple adjustment in your Silverleaf.

Darwin Pugmire
2008 Magna
6874

Re: Hot Engine Oil Light?

Reply #4 –
Yahoo Message Number: 61614
Thanks very much for all the responses! I took it to Cashman Equip, a Cat dealer & RV service shop in Reno, and they basically said the same thing. The coach is new to us and I wanted to be sure. I've got an F750 with a Cat C7 and an F650 with a Cat 3208 but this is my first coach with the Silverleaf. When we head over the hill this morning, I'll watch the coolant temp and take it easy.

I'll make the change as soon as I can find out how. I didn't get the Silverleaf manual with the coach, but I'm sure it'll be on their web page.

Thanks again!

Rich Sherman
'04 Magna 6342M

Re: Hot Engine Oil Light?

Reply #5 –
Yahoo Message Number: 61697
Thanks for all the responses and advice! I thought that I'd post a follow-up to our adventure.

We stopped by Cashman Equipment, a large Cat service shop in Reno, and spoke with their lead mechanic. Had him look at the coach engine and cooling system. The computer had logged no errors and showed a clean bill of health. We talked about how Cat monitors temps, and his advice was basically the same as the responses here.

So, the next morning we set off to climb Hwy 88 from Minden NV, over to Jackson, Ca. The outside temperature was in the mid 70's as we started out. This time, I tried driving the coach as I would a hay truck; that is I picked a lower gear, kept the rpm at around 1500 to 1600 and walked up the longest grade at about 35 to 40 mph. Worked well, our coolant ever topped 212 and the top engine oil temp was 221. The Silverleaf alarm showed at 220, so that's where it's set. Based on the responses here and the advice from Cashman I think I'll raise that to 230, as soon as I figure out how.

I probably don't need to be so conservative when climbing, the mechanic said that with the engine and equipment on this coach, he would drive it as fast as safe and it wanted to go, up to about 220 coolant temperature. Which is what I had done from Twin Falls, Id through to Reno, Nv with coolant temp never exceeding 212 on the hottest days.

Thanks again for all the advice,

Rich Sherman
'04 Magna 6342M