Supertech Syn right up there with Royal Purple

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I'm not surprised. I've used a ton of Super Tech oil and filters. Their synthetic is down to $17 something for the 5 qt jug in my area which is a pretty good buy. Not sure the cars in my signature really need the expensive stuff anyway
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RP went downhill imo when they dropped their Synerlec street oils. Comparing Synerlec SM to their newest SN......low TBN,lower moly,lower zddp,and no Synerlec additive (which was ester).

They still have that same formula in their HPS oils,but it`s not available over the counter at any of the chains.
 
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Remember that the PQIA is there to ensure that an oil meets the standards it claims. While we can cherry pick certain results and interpret them as we will, the fact remains that both oils are SN/GF-5 compliant.

I would bet that RP uses different (more expensive) base stocks than SuperTech. On the other hand, both oils used as directed in appropriate applications will keep the engines running forever and a day.
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Besides, ST synthetic is unavailable up here, and there's nothing wrong with RP's pricing in Canada. There's just something wrong with synthetic pricing in general in Canada. RP is cheaper than M1 EP and Edge with Titanium (PU is MIA) and pretty much on par with the regular synthetic offerings.
 
Originally Posted By: aquariuscsm
RP went downhill imo when they dropped their Synerlec street oils. Comparing Synerlec SM to their newest SN......low TBN,lower moly,lower zddp,and no Synerlec additive (which was ester).


I agree, but do clearly remember, RB was bashed because their stout oils had too many additives to meet the latest API ratings. Lots of people bashed them for being "behind", when in reality they had a better, stouter product.

RP then made the changes, and now its criticized for not being loaded up with additives.
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I look at the stats for RP and compare them to Valvoline SynPower and NAPA, and the three are almost identical. Maybe Ashland is making the RP API oil for them?
 
I wouldn't bet on that. It might be that they happen to buy similar (or the same) API rated additive packages. MolaKule would be able to clarify the possibility of that in the industry.
 
Originally Posted By: gfh77665
Originally Posted By: aquariuscsm
RP went downhill imo when they dropped their Synerlec street oils. Comparing Synerlec SM to their newest SN......low TBN,lower moly,lower zddp,and no Synerlec additive (which was ester).


I agree, but do clearly remember, RB was bashed because their stout oils had too many additives to meet the latest API ratings. Lots of people bashed them for being "behind", when in reality they had a better, stouter product.

RP then made the changes, and now its criticized for not being loaded up with additives.
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I totally agree with you. RP was bashed I`m guessing by people who were brainwashed by the *starburst followers*. If it didn`t have the starburst,then it was bad oil :^( What they didn`t realize,was that RP was making oil with some of the best anti-wear ingredients and ignoring catalysts,etc requirements. I used RP religiously back then. When they bowed down to the EPA,I moved on to another non-starburst oil :^)
 
Originally Posted By: gfh77665
Pure, mindless hate.^

Agreed. I've seen with my own eyes what rp with Synerlac can do for cams and wear points in an engine. It was way ahead of its time. The API starburst has actually made the product worse,not better.
The RP euro oils still have synerlac in them and can be found in a 5w30 and 5w-40 which would fit most people's needs.
And just because the API certified oil was tested I would think all API oils would be similar. This isn't a test of a producers best oils,it's a test of their API oil.
If this group were to test rp,amsoil,red line and so on best available product these wouldn't be them,and the only true test is to run the oils with tear downs at
the end. These tests just keep the blenders API certified products honest,and is not indicative of a products performance in service.
 
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The API starburst has actually made the product worse,not better.


That may have to do with the fact that they never adapted to newer additive and base oil technology. Their oils have historically contained 3x the amount of allowable sulfur, probably from the Synerlec additive.

For flat tappet cams, they had some advantages but I don't see that anymore.
 
More like Royal Purple is right down there with Supertech synthetic.
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If only it were priced the same as the Supertech stuff.

I would go with Mobil 1 over Royal Purple for off the shelf synthetic, but you are probably better off with Amsoil Signature Series or Redline.
 
Originally Posted By: aquariuscsm
RP went downhill imo when they dropped their Synerlec street oils. Comparing Synerlec SM to their newest SN......low TBN,lower moly,lower zddp,and no Synerlec additive (which was ester).

They still have that same formula in their HPS oils,but it`s not available over the counter at any of the chains.


RP still produces their synerlec oils. They are not the API licensed versions.
 
I honestly don't think any boutique oil has anything on Mobil 1 or PU. The only oils that may have an advantage are those with higher ZDP levels for engines that require more p in their oil.
 
I did a UOA with ST Syn vs Amsoil vs Valvoline vs M1. In both of our Jeeps, it did just as well as every other oil tested.

(But: M1 produced more than double the iron in the flat tappet 4.0 compared to any other oil)
 
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At parts chains prices,I'd definitely choose SN RP over M1,because at $9 a quart I'd at least be paying for a PAO instead of a grp III.
 
Originally Posted By: aquariuscsm
At parts chains prices,I'd definitely choose SN RP over M1,because at $9 a quart I'd at least be paying for a PAO instead of a grp III.


I'd rather pay for the oil with the lowest NOACK, which at this point, is the result of using GTL.
 
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