Originally Posted By: RusskiBoSS
So as many of you know - my Pontiac Vibe with the 1zz-fe engine is pretty sludged up (pics in my "Sludged 1zz" thread) from being a fleet car in previous ownership. So I do not plan on buying any more oil, because I got quite a stash at the moment already. So in my stash I have Pennzoil Ultra SRT with "Hyper Cleaning" additive or whatever it is, and I got some Mobil 1 High Mileage 5w30. So I figured that I will use only these two oils in this engine until I run out, with short 2500-3000 oil change intervals. Comes out pitch black everytime so far with such OCI.
I know that Pennzoil Conventional is praised to be super awesome cleaning oil, but PP is even better, and PUP is the magic unicorn juice that cleans like no other. But how does Pennzoil Ultra Platium 0w40 compare to Mobil 1 High Mileage 5w30 in terms of sludge cleaning power?? If you had to pick between the two in a sludged up engine - which one would you pick?
Either should by fine. I slightly prefer the Ultra Formula but prefer the HM viscosity but in either case its hair splitting.
Oil may remove soft deposits but hard deposits will require a solvent with all the usual warnings about possible blockage.
So as many of you know - my Pontiac Vibe with the 1zz-fe engine is pretty sludged up (pics in my "Sludged 1zz" thread) from being a fleet car in previous ownership. So I do not plan on buying any more oil, because I got quite a stash at the moment already. So in my stash I have Pennzoil Ultra SRT with "Hyper Cleaning" additive or whatever it is, and I got some Mobil 1 High Mileage 5w30. So I figured that I will use only these two oils in this engine until I run out, with short 2500-3000 oil change intervals. Comes out pitch black everytime so far with such OCI.
I know that Pennzoil Conventional is praised to be super awesome cleaning oil, but PP is even better, and PUP is the magic unicorn juice that cleans like no other. But how does Pennzoil Ultra Platium 0w40 compare to Mobil 1 High Mileage 5w30 in terms of sludge cleaning power?? If you had to pick between the two in a sludged up engine - which one would you pick?
Either should by fine. I slightly prefer the Ultra Formula but prefer the HM viscosity but in either case its hair splitting.
Oil may remove soft deposits but hard deposits will require a solvent with all the usual warnings about possible blockage.
