Should I start buying parts now?
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That's the new additive that's in the newer oils causing that. I think it's called main bearing shimmer. It's all the rage in the high mileage and failing engine communities.

Does it have a rod knock? If not this is what I would try:No cleaners and did not change brands but when on a road trip needed to add a quart. Gas station did not have the Castrol High Mileage so used their full synthetic.
Funny you should say that, I thought that was my name for a long time lol...popular opinion doesn't lieDick![]()
Should I start buying parts now?
just drive it man.......
Wow. You mean real diagnostic testing as opposed to pointless speculation? Don't be ridiculous.Contact blackstone or polaris labs and send off a sample to find out what's really going on.. will be about $35 IIRC. You'll get a full report of what metals are in the oil, in what quantities, how your numbers compare to other 1FZs, etc etc etc. Super valuable information.
Nothing wrong with mixing oils. Doesn't hurt anything. That's what off the shelf synthetic blend oil is-some synthetic some Dino.I'm thinking it has more to with mixing Castrol and a synthetic oil. Those are two very different types and may not play well together.
Castrol is a vegetable based oil and synthetic is just that. Never mix them. That's why I have never run Castrol. Because you should ONLY use Castrol to refill.
Do a search on oil compatibility.
If you simply attach a magnet to the pan, it keeps the metal at the bottom of the pan.
I know right? This site is dead to me now.Wow. You mean real diagnostic testing as opposed to pointless speculation? Don't be ridiculous.