Originally Posted By: Trav
Originally Posted By: andyd
I used to use Regane. Only once did I notice a "regain" So I stopped using it as a preventative and only use it if I suspect a clogged injector?
That exactly how you don't want to use these products. That's closing the door after the horse got out, once the injectors are that dirty or worse clogged they are very difficult to clean with anything in the rail/line or through the tank.
While it is true that Top Tier negates the value of these products somewhat it does not eliminate them from a maintenance plan.
Pre Top Tier engines running in used cars can still benefit from these products as the deposits they may have accumulated may be too difficult to remove with the amount found in gasoline only.
Ironically Top Tier still turns to varnish when left long term, PEA does not seem to prevent it or remove it very well, neither does alcohol, in fact the hygroscopic nature of alcohol is one of the main cause of internal injector corrosion.
Older pintel style injectors have a unique problem of needle and bore wear that Top Tier does not address, they can benefit greatly from a cleaner with a lube and corrosion protector like Redline SI-1 that even in small amounts per tank can prevent a whole host of issues.
Hypothetically a new non DI engine running a good Top Tier fuel like Shell or BP (yes there is a difference in additive amounts even with Top Tier) then you probably don't benefit much from these products but at the cost it still does no harm to run a bottle once or twice a year if for nothing more than preventive maintenance.
DI engines IMO benefit from PEA based products, from my experience with them they do accumulate deposits in the tip despite Top Tier. Rant over.
Thanks for this informative comment. My Mazda owners manual states to not use fuel additives yet I keep hearing and reading how beneficial they are for GDI engines like my 2.5. In your opinion would it hurt to run a maintenance amount of Redline? I am using Shell 91 octane as it runs better on that versus the 87.
Originally Posted By: andyd
I used to use Regane. Only once did I notice a "regain" So I stopped using it as a preventative and only use it if I suspect a clogged injector?
That exactly how you don't want to use these products. That's closing the door after the horse got out, once the injectors are that dirty or worse clogged they are very difficult to clean with anything in the rail/line or through the tank.
While it is true that Top Tier negates the value of these products somewhat it does not eliminate them from a maintenance plan.
Pre Top Tier engines running in used cars can still benefit from these products as the deposits they may have accumulated may be too difficult to remove with the amount found in gasoline only.
Ironically Top Tier still turns to varnish when left long term, PEA does not seem to prevent it or remove it very well, neither does alcohol, in fact the hygroscopic nature of alcohol is one of the main cause of internal injector corrosion.
Older pintel style injectors have a unique problem of needle and bore wear that Top Tier does not address, they can benefit greatly from a cleaner with a lube and corrosion protector like Redline SI-1 that even in small amounts per tank can prevent a whole host of issues.
Hypothetically a new non DI engine running a good Top Tier fuel like Shell or BP (yes there is a difference in additive amounts even with Top Tier) then you probably don't benefit much from these products but at the cost it still does no harm to run a bottle once or twice a year if for nothing more than preventive maintenance.
DI engines IMO benefit from PEA based products, from my experience with them they do accumulate deposits in the tip despite Top Tier. Rant over.
Thanks for this informative comment. My Mazda owners manual states to not use fuel additives yet I keep hearing and reading how beneficial they are for GDI engines like my 2.5. In your opinion would it hurt to run a maintenance amount of Redline? I am using Shell 91 octane as it runs better on that versus the 87.
