I went back to fresh motorcraft oil yesterday, its pretty quiet now. I will monitor it.
I went back to fresh motorcraft oil yesterday, its pretty quiet now. I will monitor it.
Stop running that oil, run 5W50 oil and only Ford oil filters, you will damage your cylinder head/engine I promise
This is what happened to my 08 GT500 from running AMSOIL 10W40 and AMSOIL filters...I'm not knocking AMSOIL at all, but are engines don't like 10W40 oil
I went back to fresh motorcraft oil yesterday, its pretty quiet now. I will monitor it.
Wow. Someone questions using the wrong weight oil, Amsoil no less, and it's been nearly 24 hours without someone absolutely lambasting him about it? I don't believe it. Is this forum getting soft?
Doing your own research you can find the threads showing the testing on how Amsoil starts better and remains substantially better over the course of the change interval. I think it was just the easiest thing for the Ford tech who doesn't know any better either to blame.Wow. Someone questions using the wrong weight oil, Amsoil no less, and it's been nearly 24 hours without someone absolutely lambasting him about it? I don't believe it. Is this forum getting soft?
Monitoring this out of sheer curiousity. It is hard to believe that the small difference between 10w-40 and 5w-50 could cause damage or noise in the short run -- even if it could be argued that longevity would change. It sure would be awesome for the OP, though, if it was that simple.
Heck, doesn't 5w-50 break down to something close to 40 weight after a few thousand miles anyway?
Yeah I know! But I tell you what, you could see this coming a mile away. There is a reason Ford specifies 5W50 in this engine. While I might use a different brand, I won't change weights.
Stop running that oil, run 5W50 oil and only Ford oil filters, you will damage your cylinder head/engine I promise
This is what happened to my 08 GT500 from running AMSOIL 10W40 and AMSOIL filters, read the hole thread
http://www.svtperformance.com/forums/svt-shelby-gt500-150/967902-piston-slap-ticking-knocking.html
I'm not knocking AMSOIL at all, but are engines don't like 10W40 oil
I would not recommend it, A friend of mine is Ford tech and verified that the cylinder head was damaged if you read the hole thread I documented everything I did to try and fix it. He was almost 95 percent sure that the wrong weight oil caused the damage. There is a TSB about it.
But you guys can do whatever you want, AMSOIL makes awesome stuff, and I'm not knocking them in anyway, I just wouldn't run 10W40 in are engines
I hope this isnt true. I just spent a bunch of money on Amsoil lubricants including 10w40.
Oil is the last thing I would put the blame on unless you are running cooking oil.
You can pretty much run any viscosity you want as long as it maintains the correct oil pressure when it gets hot at idle and under load. You want to make sure that oil is getting to the top end at idle hot and there is enough hydrostatic pressure to keep the the crank and rod bearing away from the journals at high rpm/loads. The SAE number is really just a range. The centistoke number is what really tells what's going on. Since the 5W50 Motorcraft shears down to what the Amsoil 10W40 starts and stays at, I think you would be OK with that oil. And since the 10W40 flows better in the cold, its an added bonus.
Bad filters on the other hand, can wreak all kinds of havoc. Not to say that any oil filter can't fail (it's an imperfect world), there are some that have a nasty reputation.