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Old 06-18-2015, 09:27 AM
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Ilmor 7.4L Oil Change

Coming to that time to do the oil change. The owner’s manual says 5W-50, but when my dealer gave me a spare quart they gave me a 5W-30. What have you guys been using in the 7.4L for oil? Also, what oil filter should I pick up? I can’t seem to find one in the owner’s manual. I decided to try to find everything at work today to try to pick everything up for the weekend and haven’t stuck my head in the engine compartment to check to see the numbers.
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Old 06-18-2015, 10:20 AM
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FourFourty FourFourty is offline
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I'd stick with 5-50 full synthetic. Most auto parts stores will have Mobil 1 in that viscosity rating.

Oil filter is a Wix 51372 IIRC.
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Old 06-18-2015, 11:09 AM
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I thought the Ilmor manual called for 15W-50 Mobil 1. That is what I am going to use

How many quarts does this beast take 440?
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Old 06-18-2015, 11:46 AM
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Found it. Manual recommends 5.5 qt of Quaker state synthetic or Mobil 1 5w-50

Or Mobil 1 15w-50

http://www.ilmor.com/user_area/conte...-05-14-v-6.pdf

(Sections 11-1 and 11-2 in the Ilmor manual)


Also the oil filter is a MV8V-1021 which cross references with a wix 51372

http://wixfilters.com/Lookup/Interch...MV8V-1021&o=me
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Old 06-18-2015, 02:15 PM
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Thanks guys.

I can find the oil filter local, but can't seem to find Mobil 1 5w-50 anywhere local at all and it seems like it's only sold at a lubricant store online or from Mobil 1 themselves. If I go with 15W-50 is there going to be a big difference between them? I know the 15 is going to be heavier but any reason to track down the 5W?
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Old 06-18-2015, 02:41 PM
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Quote:
Originally Posted by k2rider View Post
Thanks guys.

I can find the oil filter local, but can't seem to find Mobil 1 5w-50 anywhere local at all and it seems like it's only sold at a lubricant store online or from Mobil 1 themselves. If I go with 15W-50 is there going to be a big difference between them? I know the 15 is going to be heavier but any reason to track down the 5W?

I'm not sure.

I think 440 runs 15w-50 don't you buddy?

I ran it in the LS3 in my Malibu and it did fine.
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Old 06-18-2015, 03:49 PM
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FourFourty FourFourty is offline
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Well, 15-50 is going to be thicker, and delayed on distribution through the engine, on those cold winter starts....... So, if you are going to run in sub freezing temps, I would run 5-50. Otherwise, you are good with 15-50.

Yessir, Doc. 15-50 is what I run.

Both viscosity ratings are recommended by Ilmore
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Old 06-18-2015, 04:15 PM
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Ok sounds good thanks guys. I’ll hit close to freezing temps in the late fall up here for air temps but not water and nothing I have to worry about anytime soon. Plus the 15-50 is in stock in a bunch of stores around me which is always a plus.
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Old 07-30-2015, 10:16 AM
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Bumping this back up. Need to do another oil change and used my buddy's oil extractor last time. He's away for work and I don't feel like always relying on him being around to borrow his stuff. I'm going to be picking up the west marine oil extractor tonight. The question is, what fitting do I need to attached it to the drain hose on a 7.4? I read a bunch of threads but everyone seemed to have different sized hoses than the ones listed for this pump.

The extractor:
http://www.westmarine.com/buy/west-m...6-5l--11047123
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Old 07-30-2015, 10:34 AM
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K2rider, don't get that pump from west marine. Spend a bit extra and get this one

http://www.pbsboatstore.com/Jabsco-1...bzrBoCkmjw_wcB

The fitting you need is a brass fitting with 1/2 inch barb x 1/4 inch male thread. It will fit the hose from that jabsco pump and the ilmor drain hose (assuming 2012 was a 1/4 inch male just like my 2015)
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