Originally Posted by RazorsEdge
Originally Posted by dogememe
Before, with the Valvoline (and the same Royal Purple filter that's currently on there) I had some annoying rattle on startup. With the Royal Purple HPS, there is NO more startup rattle, even on cold starts. I was under the impression the oil filter was to blame (though it happened less on the RP filter and the Valvoline than compared to whatever was on there from the police department)... so you know what? This expensive oil is worth it for that reason alone - no startup rattle is worth paying a little extra.
But now I want to know how a different brand of oil could reduce startup noise, because like I said, I thought that was due to the oil filter...
Regarding the startup noise,I had a startup ticking noise on my 95 Explorer with the v6 engine. When I switched it to Royal Purple HPS,the ticking stopped. I used that oil until the truck was retired with 200,000 + miles on the original engine.
Glad at least you don't think I'm crazy... Any idea why the HPS might make a difference?
Originally Posted by dogememe
Before, with the Valvoline (and the same Royal Purple filter that's currently on there) I had some annoying rattle on startup. With the Royal Purple HPS, there is NO more startup rattle, even on cold starts. I was under the impression the oil filter was to blame (though it happened less on the RP filter and the Valvoline than compared to whatever was on there from the police department)... so you know what? This expensive oil is worth it for that reason alone - no startup rattle is worth paying a little extra.
But now I want to know how a different brand of oil could reduce startup noise, because like I said, I thought that was due to the oil filter...
Regarding the startup noise,I had a startup ticking noise on my 95 Explorer with the v6 engine. When I switched it to Royal Purple HPS,the ticking stopped. I used that oil until the truck was retired with 200,000 + miles on the original engine.
Glad at least you don't think I'm crazy... Any idea why the HPS might make a difference?