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Posted by: Cairo94507 Aug 2 2023, 08:22 AM

I was talking with Porsche parts yesterday and they told me the Mahle OC-59 oil filter (914-6) has been replaced by the PC-34 Red oil filter as the Porsche replacement. I tried calling Mahle to confirm that (I want to order 6) and the line just disconnects. Can anyone confirm that the PC-34 is correct for the 914-6?

Posted by: mskala Aug 2 2023, 08:31 AM

I've always used Mahle OC-61, I don't think I've ever seen OC-59, though they seem to be equivalent.

Posted by: TheCabinetmaker Aug 2 2023, 08:37 AM

Mahle is now owned by a company in Chicago. Probably changed some part numbers

Posted by: johnhora Aug 2 2023, 11:07 AM

Looks like the OC-61 is superseded by the OC-59

from Mahle:



https://qr.mahle.com/eu/product.xhtml?eid=99

https://www.stoddard.com/90110720309.html

Posted by: sbsix Aug 2 2023, 12:50 PM

Cairo I just changed oil in my six and used a PC34 oil filter. Branded Porsche.

Posted by: porschetub Aug 2 2023, 02:54 PM

PC 34 red filter is the original spec for 914/6 and 911 1970-71 and made by Purolator and Porsche branded, appearing they were supplied over the counter by dealers back then.
From memory the Mahle OC 61 is the same fitment but a larger filter from later 911 motor,thats would I have on my motor and my spare is the same,so thinking the OC 59 will be the same ? as John mentioned.

Posted by: fixer34 Aug 2 2023, 04:13 PM

I believe there was at least one thread about oil filters not long ago. One recommendation from that was WIX 51515XP which I currently have on my -6. Seems to be working fine.

Posted by: Lucky9146 Aug 2 2023, 04:43 PM

Mahle is now made in China.

Porsche Classic Purolator is made in Germany.
If that matters to you.

Just confirmed the above with Stoddard

Posted by: Cairo94507 Aug 3 2023, 06:35 AM

Thanks all. 6 PC-34 on the way. I try to avoid the China-made junk when possible.

Posted by: Root_Werks Aug 3 2023, 12:29 PM

OC-61 currently, didn't know about the China made thing. Sucks, I think I have a stack of OC-61's.

Posted by: mlindner Aug 4 2023, 01:52 PM

I run Mahle OC54 for last three years. Mine say made in Austria. Kelly-moss recommended.

Posted by: mlindner Aug 5 2023, 02:54 PM

I'll stock up if that is the issue.

Posted by: mlindner Aug 7 2023, 02:23 PM

Its true, just checked at Kellymoss. All from China. Sad