Valve noise after oil change

[Razor-02]

I recently changed my oil on Tuesday. I had Castrol GTX 5w-30 since February.
I put in GTX 5w-20 and now I get valve noise likes its dieseling on cold starts but noise disappears after driving. Never had this happen before. I just bought GTX 20w-50 today. Is it okay to put in the 20w-50 now just after changing the oil or wait a little while? Should I just continue to use 5w-30? Would the noise stop on cold starts? Do I have to change the filter too? Would it hurt the engine? Live down here in San Antonio. 96 Ranger 2.3 manual with approximately 150,xxx miles on it.

 

[canyoncritter]

by chance you have a fram filter on it?..

 

[pillen140]

dont use 20w50. yes, when you change your oil, always change the filter. never add more oil when its already full!

 

[exbass94]

Do not use 20w-50 in that engine. Ever. If you want to get rid of start-up noise, try a full synthetic (in the correct viscosity). Synthetic has much better cold flow properties than conventional oil. (it's less thick and flows better when cold)

 

[Simple_serf]

I would stick with 5w-30 in that motor. DO NOT PUT THE 20w-50 IN IT!!!!

I would also check for the fram filter. hell, just go and do another oil change...and put on a motorcraft filter on it at the same time.