[andyd]

Can I use 20/50 semi synthetic oil in a 1989 3.5 efi running on lpg

 

[Robbynz]

Do a google search on caltex lubricants.Good main site with most vecicles listed and what is factory recommended.Sorry I don,t have the exact address but it is a good site

 

[Serg]

20/50.. sure that is what I use in my 4.2 but it never gets really cold here in California.. all depends on your climate....


Serg

 

[Robbynz]

oil guide

The address is,www.castrol.com.au Being lpg doesn,t make any differance as its not a dry gas like cng.check the site out.

 

[Disco Mike]

The idea of using synthetic oil in your older engine is a little questionable, only because with all your older seals and gaskets you do stand a chance of a few new leaks. As for the engine it would help it by cleaning up alot of old gum and varnish.
Mike J.