similar scenario is going on with my rx. i switched to pennzoil platinum 0W20 and my millage seems better. and more pep. placebo? possibly. but who really knows?
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RP Synerlec and Increased MPG?
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Originally Posted By: Greasymechtech
Synerlec is good stuff. RP HPS is well dosed with additives.
5w vs 10w.... HTHS difference, cold flow difference, ....
Do you have an oil temp gauge?
What oil filter used before and now?
Try Mobil1 0w30 advanced fuel economy, or Amalie 0w30!
Now, get some RoyalPerp in the differentials, transfer case, ... and some Dexron-HP or Amsoil ATL in that transmission.
I do not have an oil temp gauge, unfortunately. The diffs have Synpower 75w90 in them and the transmission and transfer both have Valvoline Full Synthetic Dex-VI.
Next time I do the diffs I will probably use Amsoil SVG or the RP stuff.
Oil filter before was a PF48. I have an ultra on it at the moment.
Synerlec is good stuff. RP HPS is well dosed with additives.
5w vs 10w.... HTHS difference, cold flow difference, ....
Do you have an oil temp gauge?
What oil filter used before and now?
Try Mobil1 0w30 advanced fuel economy, or Amalie 0w30!
Now, get some RoyalPerp in the differentials, transfer case, ... and some Dexron-HP or Amsoil ATL in that transmission.
I do not have an oil temp gauge, unfortunately. The diffs have Synpower 75w90 in them and the transmission and transfer both have Valvoline Full Synthetic Dex-VI.
Next time I do the diffs I will probably use Amsoil SVG or the RP stuff.
Oil filter before was a PF48. I have an ultra on it at the moment.
Originally Posted By: Shannow
Originally Posted By: Greasymechtech
Now, get some RoyalPerp in the differentials, transfer case, ...
RP 75W140 came out Royal Black and gluggy from My Nissan's diff, after only 30k miles.
Redline went in
Transmission and differential fluids, Amsoil and Redline are better than most. They are a little expensive but worth it.
Originally Posted By: Greasymechtech
Now, get some RoyalPerp in the differentials, transfer case, ...
RP 75W140 came out Royal Black and gluggy from My Nissan's diff, after only 30k miles.
Redline went in
Transmission and differential fluids, Amsoil and Redline are better than most. They are a little expensive but worth it.
I will agree with you on that. Amsoil SVG seems to be about the best gear lube money can buy.
MPG varies greatly with driving conditions. Unless you can ensure exactly the same speed, acceleration, elevation, temperature, etc., your results are not meaningful. That's why EPA tests MPG on a dynamometer.
API 5W-30 MPG spec is stricter than 10W-30 but it's usually something you can't measure yourself.
API 5W-30 MPG spec is stricter than 10W-30 but it's usually something you can't measure yourself.
Originally Posted By: Nissan101
Yeah i noticed that and also too its the only oil my s13 dont burn
Plus the engine is holding up fine under 15psi of boost and stock internal(Well almost)
Interesting. I've heard a few others claim reduced consumption using HPS and HMX. I'll keep an eye on mine and see if it consumes the same as other brands.
No matter the brand my truck uses about 1/2-3/4 a quart every 8k miles.
Yeah i noticed that and also too its the only oil my s13 dont burn
Plus the engine is holding up fine under 15psi of boost and stock internal(Well almost)
Interesting. I've heard a few others claim reduced consumption using HPS and HMX. I'll keep an eye on mine and see if it consumes the same as other brands.
No matter the brand my truck uses about 1/2-3/4 a quart every 8k miles.
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Nissan 101, how long have you been using HPS?
Originally Posted By: Gokhan
MPG varies greatly with driving conditions. Unless you can ensure exactly the same speed, acceleration, elevation, temperature, etc., your results are not meaningful. That's why EPA tests MPG on a dynamometer.
Not only would you have to measure such a difference, you would then have to attribute it to the motor oil which is frankly impossible with so many competing variables.
MPG varies greatly with driving conditions. Unless you can ensure exactly the same speed, acceleration, elevation, temperature, etc., your results are not meaningful. That's why EPA tests MPG on a dynamometer.
Not only would you have to measure such a difference, you would then have to attribute it to the motor oil which is frankly impossible with so many competing variables.
The only time I have been able to verify a difference in fuel consumption, attributable to oil used, was in a single engine aircraft. In that case, fuel use is measured in gallons per hour, at a given power setting (RPM X Manifold pressure).
Using Mobil I aircraft oil, we got a solid 2% better consumption, over conventional shell multigrade. I suspect the difference was from better ring sealing, because their was also considerably less oil consumption. With the combination of less fuel and less oil consumed, the higher priced synthetic actually paid for itself over an OCI.
Unfortunately, Mobil had to recall that oil, because it did not effectively remove the lead from AV gas from the piston and rings. (This was not a concern for our application, since we were using Mogas (Standard unleaded gas).
In a wheeled vehicle, unless you are checking records for the entire length of an OCI, it is impossible to duplicate conditions exactly. And.......I would doubt that any oil would give more than a 3% difference......
Using Mobil I aircraft oil, we got a solid 2% better consumption, over conventional shell multigrade. I suspect the difference was from better ring sealing, because their was also considerably less oil consumption. With the combination of less fuel and less oil consumed, the higher priced synthetic actually paid for itself over an OCI.
Unfortunately, Mobil had to recall that oil, because it did not effectively remove the lead from AV gas from the piston and rings. (This was not a concern for our application, since we were using Mogas (Standard unleaded gas).
In a wheeled vehicle, unless you are checking records for the entire length of an OCI, it is impossible to duplicate conditions exactly. And.......I would doubt that any oil would give more than a 3% difference......
Originally Posted By: 4wheeldog
In a wheeled vehicle, unless you are checking records for the entire length of an OCI, it is impossible to duplicate conditions exactly. And.......I would doubt that any oil would give more than a 3% difference......
A 3% difference in fuel economy due to a motor oil (especially within grade) would be an enormous difference. If you carefully look at what ExxonMobil is claiming for AFE it shows you that the difference must be very small.
In a wheeled vehicle, unless you are checking records for the entire length of an OCI, it is impossible to duplicate conditions exactly. And.......I would doubt that any oil would give more than a 3% difference......
A 3% difference in fuel economy due to a motor oil (especially within grade) would be an enormous difference. If you carefully look at what ExxonMobil is claiming for AFE it shows you that the difference must be very small.
Originally Posted By: Thebimmerfan
This doesn't surprise me at all, it's a proven fact that swaping to a higher quality oil can lead to a better MPG, in this case I see it impossible not to notice improvement in vehicle's fuel economy and overall performance considering the fact that RP olis have superior quality.
Energy savings oils are supposed to get the same MPGs as P.A.O oils.
This doesn't surprise me at all, it's a proven fact that swaping to a higher quality oil can lead to a better MPG, in this case I see it impossible not to notice improvement in vehicle's fuel economy and overall performance considering the fact that RP olis have superior quality.
Energy savings oils are supposed to get the same MPGs as P.A.O oils.
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Bench testing against PAO reference oil is worthless. Visc and FM's can help cheat the test.
Originally Posted By: kschachn
Originally Posted By: 4wheeldog
In a wheeled vehicle, unless you are checking records for the entire length of an OCI, it is impossible to duplicate conditions exactly. And.......I would doubt that any oil would give more than a 3% difference......
A 3% difference in fuel economy due to a motor oil (especially within grade) would be an enormous difference. If you carefully look at what ExxonMobil is claiming for AFE it shows you that the difference must be very small.
I am thinking more the difference between Xw/30 and Xw/50, with the 30 being synthetic, and the 50 being conventional. But.....I agree.....3% is an enormous difference, for an oil to be responsible.
Originally Posted By: 4wheeldog
In a wheeled vehicle, unless you are checking records for the entire length of an OCI, it is impossible to duplicate conditions exactly. And.......I would doubt that any oil would give more than a 3% difference......
A 3% difference in fuel economy due to a motor oil (especially within grade) would be an enormous difference. If you carefully look at what ExxonMobil is claiming for AFE it shows you that the difference must be very small.
I am thinking more the difference between Xw/30 and Xw/50, with the 30 being synthetic, and the 50 being conventional. But.....I agree.....3% is an enormous difference, for an oil to be responsible.
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