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High ZDDP Oil Grades in Australia

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Keep in mind that ZDDP is consumed during engine operation so the PPM is not crucial unless the oil is going to be used for a longer time. And of course ZDDP is only one additive among many, base oil quality is the most important factor too.

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Yeh, aftermarket adding ZDDP to oil is at best hit and miss, personally I have every confidence that Penrite can supply engine oils for every purpose. Spoke to a tech bloke there a few years ago, they were right on to racing needs and have since released a range of ZDDP enhanced oils for various purposes.

 

They are not the only ones of course, I just prefer to support a good Aussie company.

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Yeah, I had a chat to Peter MC earlier in the week and he believes that L-series motors do best with a good mineral oil versus synthetics.  He recommended Castrol Edge 25w-50 which is the only mineral oil in the Castrol Edge range. This viscosity is in line with what the factory recommends for L-series motors too.

 

I can't comment on its ZDDP content because they do not disclose it and google searches have revealed nothing.

 

An old thread but worth a refresh by adding that Les Collins also recommends the Castrol Edge 25w-50.

A mineral oil with zinc that is better for L series engines.

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Funny someone revived this thread, I was reading through the forum (didn't find this thread), but found this thread instead where a few people suggested the penrite HPR30 20W-60, as I was trying to work out what would be best for my bus.

 

http://www.viczcar.com/forum/topic/5765-l-series-preferred-oil-brand-and-grade/?hl=hpr30#entry65233 

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I use HPR 30 and haven't had any issues. I don't know how much better the Castrol oil is but I'm happy to support an Australian company like Penrite which make great oils and support the classic car community.

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