986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Troubleshooting/sorting possible AOS issue (or maybe it is something else)

Jake Raby · 09-10-2013, 11:18 AM

I see this with engine oils that aerate too easily, which makes the issue worse, especially with hot oil.

Its also a sign that the AOS is getting weak, I mandate that my track customers change theirs every year, or upgrade to our AOS. Earlier this year I lost an engine to an AOS and it came apart at 7,000 RPM, hydro-locked and blew a piston into 10,000 pieces.

09-10-2013, 11:18 AM	#7
Jake Raby Engine Surgeon Join Date: Aug 2008 Location: Cleveland GA USA Posts: 2,425	I see this with engine oils that aerate too easily, which makes the issue worse, especially with hot oil. Its also a sign that the AOS is getting weak, I mandate that my track customers change theirs every year, or upgrade to our AOS. Earlier this year I lost an engine to an AOS and it came apart at 7,000 RPM, hydro-locked and blew a piston into 10,000 pieces. __________________ Jake Raby/www.flat6innovations.com IMS Solution/ Faultless Tool Inventor US Patent 8,992,089 & US Patent 9,416,697 Developer of The IMS Retrofit Procedure- M96/ M97 Specialist