로얄퍼플10.7%연비절감 DATA

Royal Purple Improves MPG 10.7% in Test

Several weeks ago we broadcast a video we made of our test on Long Island Sound comparing Royal Purple synthetic oil with standard motor oil. It was one of the highest rated videos that week for viewership and our testing methodology also generated numerous comments from cynics. The irony is that several months ago when Royal Purple first asked us to test their oil, we, too, were a doubting Thomas. So we understand the sentiment. But the test speaks for itself: the twin 5.0L engines when being lubricated with Royal Purple actually averaged a 10.7% improvement in fuel economy over the rpm range measured.


로얄  10.7% 연비향상 테스트

일반엔진오일과 로얄퍼플오일의 비교 동영상을 롱아일랜드 사운드에 방송을하였고 수많은 일주일동안 수많은 댓글이 달린 옾은 시청율을 기록한 동영상중 하나 였다. 몇주전 로얄퍼플에서 오일테스트를 요청했을때만 하더라도 의심을 많이 하였으나 시험은 명백히 로얄퍼플 오일이 트위 5.0L엔진에 측정RPM범위에서 평균연비를 10.7% 향상시키는 결과가 나왔다.

 

BoatTEST recently compared Royal Purple and a standard motor oil in two 5.0L Volvo Penta gas engines with 115 hours on them.

보트테스트에서는 115시간동안 로얄퍼플오일과 표준(일반)오일을 2개의 볼보 펜타 가스엔진에서 테스트를 했습니다.

The engines we tested had 115 hours on them and new, standard oil had been in them for just one engine hour before we tested. 10W30 weight was used in both oils. Reciprocal runs were made in the sound, speed was taken from a gps and fuel flow was measured by BoatTEST equipment which was hooked up to the starboard engine. Sound readings were taken at idle at the dock only of the starboard engine. In the table below conventional oil is noted as “CO” and Royal Purple as “RP.” The results of the test are as follows—

점도는 10W30을 사용하였다는 내용이고 소음에 관련된 코멘트인것 같은데 결과는 아래표와 같다는 내용 입니다. ^^ 어럽네용
 

Significant Improvement in Fuel Economy...

As you can see, the Chaparral 290 Signature, which was powered by twin 270-hp engines, was able to turn 100 more rpms at WOT when lubricated with the Royal Purple. And it was only at WOT that the relative speeds of the boat were significantly different, which was due in part to the increased rpms.

The average improvement in miles per gallon when the engines were lubricated with Royal Purple was +10.7%. We believe that is a significant and noteworthy improvement in fuel economy. Drop off the highest and lowest measurements and the average remains the same.

연비의 대폭 개선
Chaparral 290 Signature 270HP엔진에서의 연비는 평균 10.7%개선되었다는 내용
 

Speed Differences...


 

Several of our readers wonder why the boat didn’t go the same speed at the same rpm settings. The reason is because we were running the boat on Long Island Sound in choppy conditions that were constantly changing, and not in a laboratory with perfectly still water and no wind. The higher the wind and chop, the harder it is for the engines to push the boat and the more prop slippage there is. Even so the differences in average speeds was only .35 mph or 1.6% of the average speed measured from 2000 to 4500 rpms.

Sound Differences...

We measured sound levels at the dock at idle. We recorded 89 db(A) for the starboard engine with conventional oil and 86 db(A) when Royal Purple was in the starboard engine. While this is only 3 db(A) less, in fact the engine was a lot quieter because sound readings are not linear. Db is a logarithmic unit, meaning you cannot add and subtract it. An increase of 3 db is in fact a doubling of the strength of the sound. Again, we believe this is a significant difference and one that is actually measureable with the human ear without a meter.


소리의차이
정박상태에서 소음을 측정했는데 3db정도 수치가 낮고 이 수치는 선형이 아니므로 실제로는 더 조용했다라는 내용인데요 배에대서 잘몰라 어렵네요^^
 

Oil Pressure and Temperature...

Oil pressure appeared to be about the same for both oils during our test, however oil temperature was different. We measured 160 degrees for the conventional oil after the test run and 155 degrees for Royal Purple after the test.

오일 온도 측정은 로얄퍼플이 155도 기존오일이 160도로 나타남
 

Reader Questions…

Following are answers to a number of questions and comments from our readers—

Q: Did we fuel up again after the first test run with the standard oil?

A: No. The weight difference was de minimis. We used less than 10 gallons of fuel on the first test, representing about 61 lbs., or less than .007% of the boat’s displacement.

Q: What was the difference in noise levels at full throttle and at best cruise?

A: We did not measure sound underway because wind and wave noise would make the readings meaningless for our test purposes.

Q: Was the test paid for and unbiased?

A: Yes, the test was paid for and it was also unbiased. Tests of this nature usually become the property of the company paying for the test and releasing the findings is typically up to that party. In this case, after the test we informed Royal Purple of the results and told them we would publish them.

Q: Did Royal Purple supply the boat and driver?

A: No. BoatTEST.com arranged for the test boat on its own and supplied the mechanic and driver. In fact, we purchased the Royal Purple oil at Pep Boys from their stock and no Royal Purple personnel were on site during the test nor were they involved with the test in any way.

Q: How could the speeds be different if they were both measured at 4700 rpm WOT?

A: Because of the wind and waves they could have been different. However, there was a transcribing error on the data shown in the video saying the WOT for both tests at 4700. In fact, the WOT for the test with standard oil was not 4700, but 4750 rpm. The rpm for WOT with Royal Purple was actually 4850. That mistake is being corrected on the video.

Q: How did you measure RPM?

A: We used Chaparral’s onboard tach for both tests.

In conclusion, we have discovered, after all of these years, why millions of people are willing to pay more for synthetic oil — it simply improves performance, or at least Royal Purple does.