Can You Boost Additives in Low SAPS Oil.....

[JSRT4]

Is there any decent way to boost additives in today's newer low SAPS oil ?. I recall Valvoline and GM having decent additive products, but I don't know if they are still available or all that reliable. How about mixing a quart of Redline Oil for a 5 quart sump (20% rate), as Redline states that their oil can be mixed with any conventional or synthetic oil ?.

If you don't recommend mixing alternatives would you recommend just switching to a Diesel Engine Oil version of the same oil
?.

For a high revving engine would a low SAPS oil be a poor choice ?. Thanks for any replies.

 

[BobFout]

I'd not mix oils, but just run one that has more additives to begin with.

 

[JAG]

+1 to what Bob said.

 

[JSRT4]

Originally Posted By: BobFout
I'd not mix oils, but just run one that has more additives to begin with.


thanks for the reply, the easist way would then be to move to a Diesel engine oil version if I want to maintain the same viscosity with the same manufacturer.

Any opinion on a high revving motor needing more additive levels than a low SAPs oil might provide ?

 

[BobFout]

What weights/grades does the manual say is OK?

Diesel oils tend to be xw40 oils. (Though Redline and Amsoil have 5w30s that are diesel rated and mid-SAPS).

 

[JohnBrowning]

Redline makes a nice additive. I think you need something like 2/3 of an once per quart to bring SM oil up to what you would see in a CJ-4 Diesel oil.

 

[m37charlie]

You haven't mentioned one very important thing: what's the application?
If the mfg specifies a low SAPS oil, there is a very good reason. Usually it's the preservation of an expensive component like a catalytic converter or diesel particulate filter. If either of those get "poisoned", in a modern engine you may suffer a "de-rate", for instance.

Charlie

 

[JSRT4]

thanks for all of the replies on this question. I intentionally avoided mentioning the oil or the vehicle as I wanted to avoid opinions people may have of oils and vehicle applications.

The vehicle is an 02 Honda S2000 - 2L engine, it has the 9000 rpm motor, not that I take it up that high very often, but it revs around 4500 rpms at 80 mph on the highway. I am currently using Amsoil 5w40 Euro formula. I actually really like the way this engine feels on this oil, very smooth and quiet and no apparent loss of power or mpg. I'd actually say it feels stronger compared to the 10w30 group III oil it was on previously, but that's just my butt guess. The owner's manual lists 5w40 as an approved oil visc., and recommends it for cold weather use, 10w30 is the preferred oil that the car was certified with. This engine has roller cam followers. I haven't racked up enough miles yet to do a used oil analysis on the Euro Amsoil, it will be a few months before I can do that. I like this Amsoil oil as it is a light 40 weight (13.7 cst 100 deg), not overly thick as compared to the 10w30 preferred oil but just a bit more visc.

Perhaps I'm making more of this low SAP's thing than it's worth worrying about. You would think Amsoil would have tested it out pretty thoroughly before altering the original formulation. Amsoil lists this oil on their website as one of the recommended oils for my exact vehicle.