You should be using 20W-50 all year.  5 is thin thn!

Bradley Flubacher wrote:
>
> Hi everyone. ('84 1.9L gas)
>
> I just bought this van, and I don't know what oil the PO had in it.  The
> filter was junk though. I'm now running it with castol gtx 5w-30 (as best I
> can remember) with a mahle filter. I put in this oil as a cheap stop-gap
> before going to amsoil.  I was ignorant to what grade oil to put in, and put
> in what I had around... a poor choice. I replaced three pushrod tubes (with
> collapsables) when I changed the oil.
>
> Before I changed the oil, the oil pressure light never came on,  now it
> comes on after the vehicle it at operating temperature. I guess, no suprise
> because I think I have a light weight oil in it..
>
> My local parts supplier (who sells amsoil) recommends that I use 15w-40 year
> round.
>
> 1. Do you think the oil light is likely to still come on?
> 2. Is 15W-40 amsoil what you would recommend? I've heard wonderful things
> about this product (amsoil)
> 3. From somewhere on the web, I read that you should clean the oil pressure
> relief valve.  I intend to do this.  Would you?
>
> Thanks
>
> Brad