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Penrite oil
#1
Hello from Australia, 
I have been running Penrite Heritage light oil in my chummy and was thinking of shifting to Penrite Shelsley light, to help with the sludge buildup in the sump.
It has a very low detergent apparently. 
Is this a good or bad thing?

Thanks Simon
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#2
Simon,

The Penrite listing advises the Heritage series is for pre 1920 cars.

For Austin Sevens which are post 1922 always use Penrite Shelsley as recommended.
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#3
Thank you Tony, appreciate your input as always. 

Simon
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#4
Thanks Tony, Do you use Penrite? if so do you use the light? thanks again Simon
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#5
Yes- in all three 1928/9 Austin Sevens.
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