1992 GQ lubricating oil query

[658271]

Hi guys,
I have a 1992 GQ sST 3L petrol patrol which does very low kms pa. I also have Castrol oil purchased for use in a Peugeot diesel engine ie high quality synthetic oil designed for use in diesels.
Will I run into/create any problems short or long term if I use the high grade synthetic oil in theengine of the Patrol?
Advice please

[patch697]

Welcome to the forum.

Be sure to post up an intro in our introductions section when you get a chance.

For starters synthetic & mineral oils do not mix so if you intend to go synthetic you will need at least 2x oil & filter changes in close succession possibly even 3 in order to clear out your system & this is an expensive exorcize unless you have 25lts or so of synthetic kicking around.

As for running the synthetic diesel oil itself? Im not 100% sure & as its the life blood of your engine I couldn't make that call.

[658271]

Hi patch697,
Thanks for your words of wisdom. As a retiree the requisite amount of "flushing" synthetic oil @ $7 a litre for an uncertain result does not seem a good or viable option. Back to the good quality mineral 20/50!