i was wondering what you thought about running this in a 2004 mach 1 mustang. the car has 120,000 miles and has began making a ticking/tapping noise. it only makes the noise when it is hot and at idle.cold engine= no noise and reving the engine past idle, hot or cold = no noise. it makes me think it is an oil pressure deal since the oil thins when it gets hot. 5w20 is noisy, 10w30 is less noisy so i was thinking 5w40 would be great. (plus there are some ford guys that swear by a diesel spec oil in these dohc engines. let me know what you think.)
rotella 5w40 synthetic
- Thread starter wjli
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5W40 may quiet it down to a point but it will not solve the obvious problem. It does not hurt to give it a try for your own piece of mind but nothing other than a teardown and rebuild will take care of an oil pressure problem if the parts are worn out and fixable. Trying the thicker oil will at least give you a chance to use that for diagnostic purposes. If going with a thicker oil gives you higher pressure and that does shut it up then you know what the problem is.
Unless its spec'ed for your in the GA winter I would stick with 10W30. If you are in Georgia in Eastern Europe then I might never go for it.
If you're driving around a Mach 1 Mustang, I don't think it would be unreasonable to install an oil pressure gauge and be done with it.
I used that oil for a couple intervals in my 2000 gt when the 2v was still in. No complaints.
If ur running a 10-30 now, IMO I would try a HDEO in 10-30 and sticking with Rotella (will give you a CI/CJ rating) you could go to Rotella T5, it's a syn blend. It would just seem to me if oil psi is your concern (much like above) I would go a bit hevier, and I think going syn-blend and HDEO but at the same weights would possibly be enough.
Try it. There are a number of reports of it quieting high miles engines. Can't do any harm. That engine is not as tight as it was when new.
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