5.0 short block replacement
02-23-2015, 07:04 PM
#11
02-23-2015, 08:50 PM
#12
I wouldn't stress over it. The same engine in the track pack 2014 5.0 mustang calls for 5w50. The only difference are suspension, brakes, oil coolers, and maybe a few other things, but not cam tolerances. It is the same engine.
Obviously the track pack is set up for sustained heat and oil thinning track use, but it is also safe to use as a daily driver on 5w50. I suspect there is a trade off in high heat protection of the 50 vs all around 5w20. But it would point to a need for 5w50 if towing because the heat build up can be worse than track use.
Obviously the track pack is set up for sustained heat and oil thinning track use, but it is also safe to use as a daily driver on 5w50. I suspect there is a trade off in high heat protection of the 50 vs all around 5w20. But it would point to a need for 5w50 if towing because the heat build up can be worse than track use.
02-23-2015, 10:26 PM
#13
Senior Member
I wouldn't stress over it. The same engine in the track pack 2014 5.0 mustang calls for 5w50. The only difference are suspension, brakes, oil coolers, and maybe a few other things, but not cam tolerances. It is the same engine.
Obviously the track pack is set up for sustained heat and oil thinning track use, but it is also safe to use as a daily driver on 5w50. I suspect there is a trade off in high heat protection of the 50 vs all around 5w20. But it would point to a need for 5w50 if towing because the heat build up can be worse than track use.
Obviously the track pack is set up for sustained heat and oil thinning track use, but it is also safe to use as a daily driver on 5w50. I suspect there is a trade off in high heat protection of the 50 vs all around 5w20. But it would point to a need for 5w50 if towing because the heat build up can be worse than track use.
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Koolponycar (02-27-2015)
02-28-2015, 10:22 PM
#16
I'm pretty sure some of the 5.0 mustangs specify 5w30...so I'm not 100% sure the 5w20 is used because of tight tolerances or solely for mpg purposes. Still, I think i'd use 5w20 next oil change if it were me. I'd just feel a little more secure having what the manual specifies in the engine. But I probably wouldn't drain fresh 5w30 out of the engine to do so.
02-28-2015, 10:32 PM
#17
Senior Member
rlncomp, i wish all techs were like you. I went to a dealer for an oil change and they put in 5w30 and have oil changes at 3000 miles on the window sticker. SMDH.
My 2011 they put in 10w30 at every change, again all done at the dealer.
My 2011 they put in 10w30 at every change, again all done at the dealer.
02-28-2015, 11:51 PM
#18
Oooo a Custom Title.
Just wondering.
03-01-2015, 01:19 AM
#19
Senior Member
Really? Cuz I was confused. Seriously, what internally is different between the f150 and the track pack mustang 5.0? Tighter tolerances for the f150? I doubt it. Like I said, I'd run the recommended oil weight. But I wouldn't drain out fresh 5-30 to do so. I'd put 5-20 in next oil change.
03-01-2015, 12:13 PM
#20
Exactly. Get this. My dealership installed the new block. There was antifreeze EVERYWHERE under the truck, frame, and engine bay. I cleaned it off with water, because in my experience that stuff is corrosive to paint. The coolant was low also, so I'm guessing what they lost wasn't replaced so I topped it off with distilled water. OH. And I checked my oil. Quart low. Ran it to the house let it settle. Quart low. Not even touching the cross hatches. I'm sure they used 5/20 synthetic motor craft blend instead of using my oil that was in the old block, even though it was brand new. Well I added about 3/4 of a quart of full synthetic 5w30 since that's all I had handy. I'm not a fan of mixing fluids but I seriously doubt out of almost 8 quarts of oil that little bit isn't going to matter. And maybe scientifically 5w30 and 5w20 are different but in real world applications,I doubt it would hurt to run either in this truck. Or maybe it would. In either case, the next oil change will be getting 5w20 valvoline full synthetic with a motor craft filter and will be changed at every 5000