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Old Jul 29, 2008 | 06:52 PM
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two birds with one stone

1. my compressor has stopped engaging, I have checked fuses, the connector on top of the compressor, and tapped it with a screwdriver, and it won't do anything. can I supply 12v to one side of the connector to see if the clutch engages? I figured if I could rule out the clutch I could track down any electrical problem

2. can I safely use rotella 15w40 in a gas engine? benefits and downfalls of running the rotella??
 
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Old Jul 29, 2008 | 06:57 PM
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on the rotella, my dad had a 125,000 mile 302 in a F-150, and started running shell 15-40. he said, "it shurely wont hurt the old thing." he ran it for a couple years, and then ran out of rotella, so put in some 10-30 and it started knocking as soon as he started it up and ran it. coincidence?
 
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Old Jul 29, 2008 | 07:12 PM
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yes put power and ground tot he clutch and that will show you if it is working

and absolutely you can use rotella in a gasser. That is all my old ranger ever ran.
 
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Old Jul 29, 2008 | 07:16 PM
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Find the high pressure switch jump it with a paperclip and see if the clutch engages, if it does it's low on freon.
 
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Old Jul 29, 2008 | 07:21 PM
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the high pressure switch is the one on the back side of the compressor, correct??
and the reason I asked about the rotella is that I bought a little MPG cruiser and it calls for 15-40 as the optimal weight so I figured, heck, why not run rotella, and I just wanted to make sure i wouldn't run into any problems with it
 
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Old Jul 29, 2008 | 07:26 PM
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I always jump the one attached to the drier it's just easier.
 
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Old Jul 29, 2008 | 08:36 PM
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Originally Posted by flaboy63
Find the high pressure switch jump it with a paperclip and see if the clutch engages, if it does it's low on freon.
Ditto. I just did it to mine this weekend.

We run 15w-40 in almost everything since we buy it by the drum. Never had a problem. I do know that if you have an older worn out engine that might burn a litter oil, switching to a litter thicker stuff may help.
 
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Old Jul 30, 2008 | 08:50 PM
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well I tinkered with the truck some this evening and the good news is that the clutch and everything is ok, and I think I found my freon leak with my el-cheapo uv light, the fitting where the high pressure switch is had some dye around it and down the side of the drier below, I will replace the o ring tomorrow and get her charged back up!! thanks for the help on how to jump the compressor,
 
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