High Zinc Fully Synthetic Oil?

[Chuffer]

I got mine from Ebay just last week - was £31.50 including postage for the 5 litre can.

That`s a good deal .

 

[antijam]

I have a number of old bangers - including the 'Vette - that require a 'Classic' oil. I feed them all Castrol Classic XL 20W-50. Castrol don't specify ZDDP content but it's generally assumed to be 800ppm. This is probably less than optimum but none of my engines get a hard life any more and so far none have complained. I buy it in 20L tubs which these days cost about £120.

 

[Vetman]

I use the Castrol Classic XL 20W-50. I like to crank the engine a bit before I pump the throttle. This helps to get the oil up to the rockers before it fires.

Racing products assume more frequent replacement as a rule.

 

[Mad4slalom]

Had this back from fuchs tech dept today

 

[Rod Pinder]

Hadn't heard of Penrite previously (Australian) - their website mentions that their Classic Oils have Zinc protection and interestingly (given the earier question on this thread) they have a similarly treated synthetic oil. Unfortunately they don't mention the specific ppm content od thir classic oils - except for their 10 Tenths Racing Oil (which is shown as 2200 ppm). Being very specifically a 'racing' oil I'm guessing its designed for very limited single day usage - if someone cares to research ZDDP content 2200 ppm is possibly too much for regular daily use.

Penrite Classic Plus 15/50 states 1380 ppm if that's of any help.

 

[Chuffer]

Had this back from fuchs tech dept today

The question is with the approximation . Is it approx. less than 1200ppm or approx. more than 1200ppm ? Surely there must be a product data sheet stating precisely what the make up of the oil is . It`s a bit like saying " I nearly won the lottery yesterday" .

 

[Mad4slalom]

The question is with the approximation . Is it approx. less than 1200ppm or approx. more than 1200ppm ? Surely there must be a product data sheet stating precisely what the make up of the oil is . It`s a bit like saying " I nearly won the lottery yesterday" .

Its vague I know , but he i think was thinking it was for a commercial vehecle as it was my piano removals email address. Now i have sent him the details of the engine and he is looking further into it.