Penrite oil

[Simon Anderson]

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

[Tony Press]

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.

[Simon Anderson]

Thank you Tony, appreciate your input as always. 

Simon

[Simon Anderson]

Thanks Tony, Do you use Penrite? if so do you use the light? thanks again Simon

[Tony Press]

Yes- in all three 1928/9 Austin Sevens.