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I've read that adding a cap full of 2 stroke synthetic oil per tank of gas is good for HPFP's.
My old BMW 135i had HPFP issues and I read there someone suggesting that adding a cap full of 2 stroke oil per tank of gas would help keep the HPFP from going bad (at least on the 135).
If the chirping on our cars is lubrication related, maybe this might help?
I posted this same info on another chirping thread, and someone said it might affect the octane rating, not sure about this.
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