Originally Posted By: HBCALI
I agree that RP has very specific target audience, namely the racing market. I also tend to believe that the average automotive consumer is "spill-over" from RP's intended market. I don't believe the notion that "...if it's good on the race track, it's even better in your passenger car"... It's just too broad and unspecific for the price you pay for 5 quarts. That's why I'm looking for a replacement brand with comparable protection. This forum tends to agree thatQuaker State Ultimate Durability would be a good choice for the money
RP use is also growing among vintage car enthusiasts, at least around here. ZDDP additives are rather expensive and hard to find here, so word has spread about RP. For my money, conventional HDEO would do the trick. However, if I wanted a synthetic with enough ZDDP, RP would be an option, but then again, so would any of the Chevron, SOPUS, or XM synthetic HDEOs. Some people, however, refuse to put an HDEO in a gasoline engine.
As for spillover, you're quite right. A buddy of mine has a new F-150, still under warranty. He insists upon using RP 5w-20, despite the fact that it's SL (oil related failure would have to be covered by RP and not by Ford). He changes it every 3,000 miles, too. He thinks it's doing a phenomenal job and it helps him worry less about his engine. So, I guess it's doing its job.
Quaker State Ultimate Durability is routinely on sale here and can be had at a good price. The only beef I have is that the displays are filled with only the common viscosities (i.e. 5w-20, 5w30, and 10w30), which aren't optimal choices for my Audi. Aside from that little quirk, dollar for dollar, it's hard to beat Quaker State Ultimate Durability.
Just as an aside, speaking of oil availability, a few years ago, I used to use Mobil 1 5w30 exclusively (since it fit my application of the time) and routinely bought it at Superstore (a big grocery store up here). It was just a convenient place for me to get it. I've noticed lately, oddly enough, that their regular price is substantially cheaper than the regular price at Walmart or Canadian Tire. Sales are rare, but regular price is about $5 a jug cheaper than any other place's regular price.