I have to admit I've been a member now for a while and heard all of you talk a lot about the GF-4 issue (soon to becom GF-5). And I just read about GF4 for the first time. So tell me if I have this correct. Basically, any oil that is SM which is GF-4, any brand, is pretty much equal in so far as drain intervals based on the stringent test the oil has been put through, that being the GF-4 standard? Any Sm will keep your engine as clean regardless of marketing, IE..YB Pennzoil cleaing engines 4 times better than other brands, and Castrol GTX being 57% better at sludge protection than all other brands?
GF-4 confession
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In general, yes. Each company may tailor or have some "stealth" additive they will tout but most are very similar and meet most of the same spec's. There are also only a handful of additive companies as well so that is why most oils look similar these days in terms of AW additives and such (boron/moly/Na etc).
For synthetics, different goals/specs are involved and it becomes a different game to some degree.
For synthetics, different goals/specs are involved and it becomes a different game to some degree.
GF-4 is just a minimum - I think some oils will actually outperform others in various ways - wear control, cleanliness etc.
But GF-4, and soon to be GF-5 is a very very HIGH minimum.
I've been using Pennzoil Platinum to do the dishes - don't even have to scrub the baked on grime...
But GF-4, and soon to be GF-5 is a very very HIGH minimum.
I've been using Pennzoil Platinum to do the dishes - don't even have to scrub the baked on grime...
NICE ONE!!
Originally Posted By: Drew99GT
GF-4 is just a minimum - I think some oils will actually outperform others in various ways - wear control, cleanliness etc.
But GF-4, and soon to be GF-5 is a very very HIGH minimum.
I've been using Pennzoil Platinum to do the dishes - don't even have to scrub the baked on grime...
Nice
I'll have to try that one
GF-4 is just a minimum - I think some oils will actually outperform others in various ways - wear control, cleanliness etc.
But GF-4, and soon to be GF-5 is a very very HIGH minimum.
I've been using Pennzoil Platinum to do the dishes - don't even have to scrub the baked on grime...
Nice
I'll have to try that oneOriginally Posted By: buster
In general, yes. Each company may tailor or have some "stealth" additive they will tout but most are very similar and meet most of the same spec's. There are also only a handful of additive companies as well so that is why most oils look similar these days in terms of AW additives and such (boron/moly/Na etc).
For synthetics, different goals/specs are involved and it becomes a different game to some degree.
So it seems that if this is the case, Pennzoil has "stealth" additives over Valvoline and others in regard to the conventional line because it cleans 4X's better than the others do, or so they advertise?
In general, yes. Each company may tailor or have some "stealth" additive they will tout but most are very similar and meet most of the same spec's. There are also only a handful of additive companies as well so that is why most oils look similar these days in terms of AW additives and such (boron/moly/Na etc).
For synthetics, different goals/specs are involved and it becomes a different game to some degree.
So it seems that if this is the case, Pennzoil has "stealth" additives over Valvoline and others in regard to the conventional line because it cleans 4X's better than the others do, or so they advertise?
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There's something special going on in them yellow bottles.
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