i just looked at my dipstick at the oil reading was right at minimun and i still have 14% left or so it says "im thinkin b.s.", im gonna put mobile 1 in that bit.

 

You shouldn't wait that long anyway.

 

dude its just a rough idea you really shouldnt let it get past 50%... at most change your oil at 5000 miles with full synth

 

It's LIFE not LEVEL, how did the oil left look, that's what the meter is supposed to be guessing.

 

I always change mine at 50% with Mobil 1 full-syn I never let mine get past 50%.

 

word.. ive been using Q but im thinking about swtiching to mobile 1 or royal purple..

 

I've talked to a few mechanics about this. Like bredick said, its life, not level. Stock, go by the oil life monitor, but the further you get from stock, it is more likely that you need to change it more frequently. And you still need to check your oil regularly anyway.

 

Ive been thinking about Royal Purple myself, Do you think it is as much of a benefit like they say

 

you should be changing your oil every 3000 miles

 

they replaced every liguid in a mustang then dynod it and they saw something like 20 whp.. difference.. it was like motor oil and tranny fuild .. and that was the difference..lol it was on a show

 

^^^^^^x2 for me never let it get below 50%

 

1. You should check your oil level at least once a month. The oil life meter only measures oil LIFE.

2. As long as you are using synthetic oil there is no reason to change your oil at 3000 miles. Either change it when the DIC tells you, or about every 5000 to 6000. You may want to change your oil filter more often though. I still change my oil filter every 2500 to 3000 miles then change my oil every 5000 to 6000 miles. Of course if you are racing your car all the time you will want to change the oil more often, but most people aren't that hard on their car.

 

i change my oil when ever i have time. usually once every 2 months or so

 

oh god here goes another oil life meter thread

 

how does tranny fluid give you more HP?

 

i think he means changed out all the fluids with royal purple products. and tranny fluids can make a difference, more resistance = less HP

 

Could you explain that a bit for me. I'm confused.

Edit:
All I am wondering is how you know that the RP trans fluid adds HP because it has less resistance. It may have less FRICTION, but that's about it. Friction would cause HEAT which will break down fluid faster and cause premature/normal wear, but it will not reduce HP. Now, if you want to pour molasses or some cement in there then it would most likely do what you are talking about.

I;m not saying that I don't believe you. I would just like to see some facts to back up the statement that you have made.

 

I change mine when it says 25% everytime.

 

like already said, you still have to check to make sure the level is right.


this doesn't hurt anything, but it doesn't help either, and it's pretty much a waste of money. especially if your using synthetic.

 

idk dude i saw it on the boob tube on one of those spike tv horse power shows.... ill see if i can find it.. they where using a dynojet dyno ..

http://www.royalpurple.com/techrp/summary.html

here is one of the links.....

and another

click on trucks to watch one of the videos
http://www.royalpurple.com/homea/homea.html

 

i change it at 30% thats what the chevy tech says. i take it there to get it changed every time! GM FTW!

 

I was told that you COULD change the oil every 8k-10k km (5k-6k miles) when using synthetic.

 

Independent tests clearly document the power, protection and performance of Royal Purple® Motor Oil.

1.5 - 3.0%


Increase in Engine Horsepower and Torque

3 - 5%


Saves Fuel over Other “Energy Conserving” Oils

400%


Greater Film Strength - Reduces Wear1

> 20%


Reduces Harmful Exhaust Emissions

Up to 12%


Reduces Engine Heat

300 - 500%


Greater Oxidation Stability - Increases Oil Life2

Summary of Tests -- Some data fields are blank because the data field was not a part of the original test criteria.

Data Source: Sport Truck magazine fillerArticle available June 1st

Description of Test: Replaced existing motor oil with Royal Purple 5W30 motor oil. Dyno pull performed on an all-aluminum 572ci powerplant built by DNE Motorsports Development owned by Dave Ebbert.

Engine Type


Performance Improvement

Gasoline


An increase of 13 HP

Data Source: FordTruckWorld.com visit FordTruckWorld.com

Description of Test: Replaced existing motor oil, transmission and differential fluid with Royal Purple 5W30 motor oil, Max ATF and Max-Gear 75W90 in a 2003 Ford Harley Davidson Supercrew with a 5.4 liter Supercharged 2wd automatic transmission.

Engine Type


Fuel Savings

Gasoline


7.4% (1.1 mpg increase)

“Another advantage to switching to Royal Purple is oil change intervals are extended to 12,000 miles.”

Data Source: GM High-Tech Performance Magazine Read the Article

Description of Test: Replaced existing motor oil and gear oil with Royal Purple 5W30 motor oil and Max-Gear 75W90 in a 1994 Formula Firebird with a LT1 engine*. Purple Ice super-coolant additive was added to the cooling system.

Engine Type


Performance Improvement

Gasoline


Horsepower
Increased 11 hp (4.7%)


Torque
Increased nearly 12 ft-lbs (4.2%)

*Fuel injectors and air intake were cleaned and the oil filter and air filter were replaced at the same time.

Data Source: Sport Truck Magazine Read the Article

Description of Test: Replaced existing 10W30 engine oil, transmission fluid and gear oil with 10W30 Royal Purple Motor Oil, Max ATF transmission fluid and Max Gear gear oil in a 1996 Chevy C3500 truck.

Engine Type


Performance Improvement

Gasoline


Horsepower
Average + 10 hp, up to 5% increase in baseline hp


Torque
Average + 12 lb-ft

Data Source: Insight Service

Description of Test: Used oil analysis was used to determine the amount of wear metals produced in a dirt track Sprint car before and after switching to Royal Purple Motor Oil.

Engine Type


Wear

Gasoline


Wear was reduced 80% and oil change intervals were able to be extended from once per race to once every three races.

Data Source: Trucks! Watch the Video

Description of Test: Trucks! television program conducted a test to determine if changing from conventional oil to Royal Purple® lubricants would decrease drag and drive train heat. The test was conducted at Hypertec's dyno facility in Memphis, Tennessee on August 27, 2005. The ‘Little Red Wagon’, a 1999 Dodge Ram 4x4 truck, was used for the test.

Testing Equipment: A two-in-floor, all-wheel-drive super flow chassis dynamometer and a Raytek MX4 infrared thermometer.

Procedures: The truck was strapped down for safety. The truck was then started, the four-wheel-drive engaged and the truck left running on the dyno for 30 minutes in order to allow temperatures to stabilize. Temperature readings were then taken on the front and rear differentials. The engine was then accelerated to capture the initial torque readings on the dyno. A second run on the dyno was conducted to assure consistency in results. Once consistency was documented, the truck was shut down and the motor oil, transmission fluid and differential fluids were drained and replaced with Royal Purple® lubricants.

After the fluids were swapped the truck was once again started and left running on the dyno for 30 minutes in order to allow temperatures to stabilize. Temperature readings were then taken on the front and rear differentials. The engine was then accelerated to capture the torque readings on the dyno. A second run on the dyno was conducted to assure consistency in results.

Engine Type


Performance Improvement

Gasoline


Torque increases as much as 3.5%
throughout the power curve.

The front differential temperatures
decreased 10 degrees F.

The rear differential temperatures
decreased 8 degrees F.

Data Source: *V8TV Watch the Video

Description of Test: Replaced existing mineral engine oil in a stock 1990 Mustang to Royal Purple® XPR 5W30 motor oil. Additionally, replaced existing transmission fluid with Royal Purple Max ATF® and existing differential fluid to Royal Purple's Max-Gear®.

Engine Type


Performance Improvement

Gasoline


Horsepower
2.0%


Torque
—

*Ignition, plus wires were also replaced at the time fluids were replaced.

Data Source: Top Dead Center TV Watch the Video

Description of Test: Replaced existing conventional motorcycle oil with Royal Purple's Max-Cycle® in a brand new Rev-Tech engine. Temperatures continuously monitored using a thermal imaging camera.

Engine Type


Performance Improvement

Gasoline


An average temperature Reduction at Idle of 11° F

Greater temperature reductions were expected at higher rpm's.

Data Source: Performance Auto & Sound Magazine Read the Article

Description of Test: Replaced existing engine oil and transmission fluid with Royal Purple's 5W30 Motor Oil and Royal Purple's Max-Gear® 75W90 transmission lubricant in a 1999 Nissan Maxima.

Engine Type


Performance Improvement

Gasoline


Horsepower
3.0%


Torque
—

Data Source: Longview InspectionFull Report - PDF

Description of Test: Replaced existing OEM motorcycle oil with Royal Purple's Max-Cycle® 20W50 in a 2003 Harley Davidson Soft-Tail Standard with a Twin Cam 88 engine to determine if switching to Royal Purple® would reduce operating temperatures. Temperatures continuously monitored with a FLIR Model 550 Radiometer during testing.

Engine Type


Performance Improvement

Gasoline


Temperature Reduction
24° F - 44° F

Data Source: D & D Performance Enterprises View the chart

Description of Test: Replaced existing synthetic motorcycle oil with Royal Purple's Max-Cycle® 20W50 in a 2004 Harley Davidson 1200XL (Sportster Roadster) on a Super Flow Cycle Dyne Eddy Current Load Dyno.

Engine Type


Performance Improvement

Gasoline


Horsepower
1.2%


Torque
1.3%

Data Source: Tuner Performance Reports Magazine Read the Article

Description of Test: Replaced existing stock motor oil with Royal Purple's high performance motor oil in a 2002 Honda Accord and tested on full chasses dynamometer.

Engine Type


Performance Improvement

Gasoline


Horsepower
1.8%


Torque
—

Data Source: Drag Sport Magazine Read the Article

Description of Test: Replaced existing 20W50 engine oil with Royal Purple's 10W30 Motor Oil in a 1994 SR20DET Turbo 2.0L engine from Japan fitted in a 1989 240 SX and tested on full chassis dynamometer.

Engine Type


Performance Improvement

Gasoline


Horsepower
3.2%


Torque
1.5%

Data Source: Hot Rod TV Watch the Video

Description of Test: Replaced existing mineral oil to Royal Purple's XPR 5W30 motor oil and Max-Gear® 75W90 in a 1962 Ford Galaxy.

Engine Type


Fuel Savings

Gasoline


City
23.4%


Highway
28.8%

Data Source: Hot Rod TVWatch the Video &
Hot Rod Magazine Read the Article

Description of Test: Replaced existing 20W50 engine oil, GM Dexron III® ATF fluid, and 75W90 differential fluids with Royal Purple's 20W50 Motor Oil, Max ATF® and Max-Gear® 75W90 in a 400 HP ’65 Mercury Comet and tested on full chassis dynamometer.

Engine Type


Performance Improvement

Gasoline


Horsepower
2.5%


Torque
1.5%

Data Source: North Carolina State University Full Report

Description of Test: Brand Name “energy conserving” 10W30 motor oil vs. Royal Purple® 5W30 in 25 vehicle fleet test (North Carolina Highway Patrol).

Engine Type


Fuel Savings


Emissions Reductions


Performance Improvement

Gasoline


2.5%







Data Source: North Carolina State University Full Report

Description of Test: CLR Research Engine Test (15W40 motor oils).




Engine Type


Fuel
Savings


Emissions Reductions3

Royal Purple® vs.
Brand Name mineral oil


Diesel



Soot


NO2


CO


3.68%
@1200 RPM


11.75%


8.5%


17.7%

2.48%
@1600 RPM


17.58%


-6%


21.0%

Royal Purple® vs.
Premium synthetic oil


Diesel


3.37%
@1200 RPM


4.3%


7.2%


28.15%

1.48%
@1600 RPM


3.0%


same


33.87%

Data Source: North Carolina State University Full Report

Description of Test: CLR Research Engine Test (5W30 “energy conserving” motor oils).




Engine Type


Fuel Savings


Emissions Reductions3

Royal Purple® vs.
Brand Name mineral oil


Gasoline


4.5%
@1200 RPM

5.0%
@1600 RPM


NO2 was over 50% lower @1200 RPM where complete combustion occurred.
CO levels with Royal Purple® were low at all loads. Royal Purple® tended to prevent incomplete combustion.

Royal Purple® vs.
Premium synthetic oil


Gasoline


2.5%
@1200 RPM

3.0%
@1600 RPM

Data Source: North Carolina State University Full Report

Description of Test: EPA 75 (city) and HWFET (Highway Fuel Economy Test) tests comparing a Brand Name 10W30 “energy conserving” motor oil to Royal Purple® 5W30 motor oil.

Engine Type


Emissions Reductions3

Gasoline


CO


HC


NO2

EPA 75
29%


EPA 75
16%


EPA 75
1%

HWFET
62%


HWFET
19%


HWFET
-23%

Data Source: Horsepower TV Watch the Video

Description of Test: Replaced existing 5W30 synthetic engine oil, GM Dexron III® ATF mineral oil and 75W90 synthetic differential fluid with Royal Purple's 5W30 Motor Oil, Synchromax® manual transmission fluid and Max-Gear® 75W90 in a 2000 Camaro SS and tested on full chassis dynamometer.

Engine Type


Performance Improvement

Gasoline


Horsepower
2.9%


Torque
—

Data Source: Hot Rod Magazine Read the Article

Description of Test: Replaced existing mineral oil in new GM 383 V-8 Motor.

Engine Type


Performance Improvement

Gasoline


Horsepower
1.7%


Torque
2.0%

Data Source: Oklahoma State University

Description of Test: Brand Name 15W40 engine oil vs. Royal Purple® 15W40 on full chassis HD truck dynamometer4.

Engine Type


Fuel Savings


Emissions Reductions


Performance Improvement

Diesel


4.4%


Smoke Opacity (SNAP Test)
22%


Horsepower
2.8%

1


Film Strength based on comparison of leading 5W30 vs. Royal Purple® 5W30 Motor Oil in Falex No. 1 "high pressure" test. (Scar widths mm. Leading 5W30 motor oil: 5.9 mm - scored; Royal Purple® 5W30 Motor Oil: 1.4 mm - polished.)

2


Oxidation life based on U.S. Bureau of Standards TFOUT oxidation test (leading synthetic 5W30 motor oil - 409 minutes; leading 5W30 mineral oil - 246 minutes; Royal Purple® 5W30 - 1300 minutes.)

3


Terminology:
CO = Carbon Monoxide (a poisonous gas);
HC = Hydrocarbons (unburned fuel - normally occurs when fuel to oxygen mixture is too rich);
NO2 = Nitrous Oxide (cited as a contributor to smog, ozone, acid rain and regional haze and is exacerbated by the elevated combustion temperatures of “lean burn” engines where more oxygen exists than is needed to completely burn the fuel);
HP = Horsepower;
CO and NO2 are typically on polar opposites. When one increases, the other decreases;

4


Fuel and horsepower tests performed on 1996 Peterbilt truck with Caterpillar C-12 engine. Emission testing performed on Detroit Series 60 and Caterpillar 3176B engines.

 

on syn oil you can go to 5000 maybe even more if you choose.

 

Exactly... the meter measures the quality of the oil that is in there... not the quantity.

though I never let mine get below 25%