RL 5w20 - How long?
- Thread starter mattd
- Start date
- Status
i think redline says up to 15k, depending on the car. i would run it 12k at most, JMO
true about getting your moneys worth!
The oil life monitor of the 2007 Accord V6 is calibrated with conventional oil, you should be able to extend OCI beyond the OLM by 50% with Redline.
Originally Posted By: mattd
I dont mind paying the extra $ for the oil. I liked the added back and HTHS of this oil.
I can't think of a more inappropriate syn oil for this application partly because of add' pack but mainly due to the too high HTHS vis' and uncompetitively low VI.
I'd change it out at the first opportunity for any of the "true" 0W-20 or 5W-20 oils available.
I dont mind paying the extra $ for the oil. I liked the added back and HTHS of this oil.
I can't think of a more inappropriate syn oil for this application partly because of add' pack but mainly due to the too high HTHS vis' and uncompetitively low VI.
I'd change it out at the first opportunity for any of the "true" 0W-20 or 5W-20 oils available.
i was going to try RL 0w20 next...
What was wrong with the add pack? I thought it was pretty nice...but yes, the HTHS is high for a honda engine and the VI of 145 is low for a syn oil...i can tell on cold starts that the oil is rather thick by the way the engine fires. But i do like the added protection of the HTHS. I will try the 0w20 next, as the redline product seems to have "smoothened" out the engine nicely, especially at operating temp.
What was wrong with the add pack? I thought it was pretty nice...but yes, the HTHS is high for a honda engine and the VI of 145 is low for a syn oil...i can tell on cold starts that the oil is rather thick by the way the engine fires. But i do like the added protection of the HTHS. I will try the 0w20 next, as the redline product seems to have "smoothened" out the engine nicely, especially at operating temp.
Last edited:
With a HTHS viscosity of 3.3cP RL 5W-20 is really a mid-grade 30wt oil with a low VI which doesn't help in the cold starting department. I'm not surprised you've noticed the engine is slow to crank when cold.
It is a myth or perhaps it's better to say a misunderstanding that a high HTHS vis' means better protection. Since HTHS vis is an accurate measure of how thick or thin an oil is, a higher HTHS vis' is just a thicker oil and if you don't require a thicker oil no greater "protection" is being provided.
The reservation with the RL add' pac' doesn't apply to the high moly level which is great but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
RL 0W-20 is a better choice with it's naturally high VI of 166 and lower HTHS vis. But make no mistake, while it is RL's lightest street oil offering it is anything but a light 20wt and is still heavier than the 0W-20 and 5W-20 oils spec'd by Honda.
While RL states it's HTHS vis is 2.7cP, I have it on good authority that it actually may be closer to 3.0cP which would would give it the operational viscosity more characteristic of a lght 30wt oil.
It is a myth or perhaps it's better to say a misunderstanding that a high HTHS vis' means better protection. Since HTHS vis is an accurate measure of how thick or thin an oil is, a higher HTHS vis' is just a thicker oil and if you don't require a thicker oil no greater "protection" is being provided.
The reservation with the RL add' pac' doesn't apply to the high moly level which is great but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
RL 0W-20 is a better choice with it's naturally high VI of 166 and lower HTHS vis. But make no mistake, while it is RL's lightest street oil offering it is anything but a light 20wt and is still heavier than the 0W-20 and 5W-20 oils spec'd by Honda.
While RL states it's HTHS vis is 2.7cP, I have it on good authority that it actually may be closer to 3.0cP which would would give it the operational viscosity more characteristic of a lght 30wt oil.
Originally Posted By: CATERHAM
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
Evidence of no other benefit?
Originally Posted By: CATERHAM
I have it on good authority that it actually may be closer to 3.0cP which would would give it the operational viscosity more characteristic of a lght 30wt oil.
Who is the good authority?
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
Evidence of no other benefit?
Originally Posted By: CATERHAM
I have it on good authority that it actually may be closer to 3.0cP which would would give it the operational viscosity more characteristic of a lght 30wt oil.
Who is the good authority?
Honda engines will last forever on 600 ppm of Phosphorus which I think is evidence enough.
The good authority is a friend of mine who periodically has access to HTHS vis' values of a number of oils from a respected independant lab. The info' is almost 2 years old.
You can of course dismiss the info' as a single test from an older batch which is what it is.
RL's 0W-20 is on my list of oil's I'd like to try.
If someone is truly interested in the HTHS vis of this oil and wants to donate 4 quarts I'd be more than happy to perform my own viscosity test as I've done on a dozen or so on other oils. Cheaper than paying a lab' $150 to $200 to do the test.
The good authority is a friend of mine who periodically has access to HTHS vis' values of a number of oils from a respected independant lab. The info' is almost 2 years old.
You can of course dismiss the info' as a single test from an older batch which is what it is.
RL's 0W-20 is on my list of oil's I'd like to try.
If someone is truly interested in the HTHS vis of this oil and wants to donate 4 quarts I'd be more than happy to perform my own viscosity test as I've done on a dozen or so on other oils. Cheaper than paying a lab' $150 to $200 to do the test.
Originally Posted By: CATERHAM
Honda engines will last forever on 600 ppm of Phosphorus which I think is evidence enough.
I don't think an engine lasting x number of miles is evidence that there is no benefit to higher phosphorus levels.
Quote:
RL's 0W-20 is on my list of oil's I'd like to try.
If someone is truly interested in the HTHS vis of this oil and wants to donate 4 quarts I'd be more than happy to perform my own viscosity test as I've done on a dozen or so on other oils. Cheaper than paying a lab' $150 to $200 to do the test.
What test is that? Oil pressure?
Honda engines will last forever on 600 ppm of Phosphorus which I think is evidence enough.
I don't think an engine lasting x number of miles is evidence that there is no benefit to higher phosphorus levels.
Quote:
RL's 0W-20 is on my list of oil's I'd like to try.
If someone is truly interested in the HTHS vis of this oil and wants to donate 4 quarts I'd be more than happy to perform my own viscosity test as I've done on a dozen or so on other oils. Cheaper than paying a lab' $150 to $200 to do the test.
What test is that? Oil pressure?
Originally Posted By: CATERHAM
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
IF he has no ring or valve seal problems, how would the above occur?? (YES, I know that if is the operative word here.
)
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
IF he has no ring or valve seal problems, how would the above occur?? (YES, I know that if is the operative word here.
Originally Posted By: dailydriver
Originally Posted By: CATERHAM
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
IF he has no ring or valve seal problems, how would the above occur?? (YES, I know that if is the operative word here.
)
True, but I'm not sure ZDP levels that high good for other reasons in a modern engine.
Originally Posted By: CATERHAM
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
IF he has no ring or valve seal problems, how would the above occur?? (YES, I know that if is the operative word here.
True, but I'm not sure ZDP levels that high good for other reasons in a modern engine.
Just to start off, I like reading the Cat's posts- I have probably learned more from him than any articles I've ever read combined.
I regularly spike my Honda K24 with a half dose of ZDDPLus which brings Zn/phos levels up to around 1200. I thought Zn/Phos levels provide anti-wear benefits other than flat tappet applications. Are you saying this is not correct?
Yes, I know the engine will outlast the car, but I want to keep it running like new when I do sell it. Car uses no noticeable oil between 7K mile OCIs
I regularly spike my Honda K24 with a half dose of ZDDPLus which brings Zn/phos levels up to around 1200. I thought Zn/Phos levels provide anti-wear benefits other than flat tappet applications. Are you saying this is not correct?
Yes, I know the engine will outlast the car, but I want to keep it running like new when I do sell it. Car uses no noticeable oil between 7K mile OCIs
Originally Posted By: buster
Originally Posted By: dailydriver
Originally Posted By: CATERHAM
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
IF he has no ring or valve seal problems, how would the above occur?? (YES, I know that if is the operative word here.
)
True, but I'm not sure ZDP levels that high good for other reasons in a modern engine.
Not sure it was the oil or not, but I lost both cats on my old 96 Merc 4.6 when I was using SL oil with higher ZDDP. I always kept the engine very well tuned.
Originally Posted By: dailydriver
Originally Posted By: CATERHAM
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
IF he has no ring or valve seal problems, how would the above occur?? (YES, I know that if is the operative word here.
True, but I'm not sure ZDP levels that high good for other reasons in a modern engine.
Not sure it was the oil or not, but I lost both cats on my old 96 Merc 4.6 when I was using SL oil with higher ZDDP. I always kept the engine very well tuned.
Originally Posted By: tig1
Originally Posted By: buster
Originally Posted By: dailydriver
Originally Posted By: CATERHAM
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
IF he has no ring or valve seal problems, how would the above occur?? (YES, I know that if is the operative word here.
)
True, but I'm not sure ZDP levels that high good for other reasons in a modern engine.
Not sure it was the oil or not, but I lost both cats on my old 96 Merc 4.6 when I was using SL oil with higher ZDDP. I always kept the engine very well tuned.
My 01 F150 is still on the original cats, it ran SL for most of its life, and the last ~30K on RL.
Originally Posted By: buster
Originally Posted By: dailydriver
Originally Posted By: CATERHAM
...but rather the high ZDDP content which is counterproductive in your modern Honda engine. It will just potentially shorten the life of your cat' with no other benefit.
IF he has no ring or valve seal problems, how would the above occur?? (YES, I know that if is the operative word here.
True, but I'm not sure ZDP levels that high good for other reasons in a modern engine.
Not sure it was the oil or not, but I lost both cats on my old 96 Merc 4.6 when I was using SL oil with higher ZDDP. I always kept the engine very well tuned.
My 01 F150 is still on the original cats, it ran SL for most of its life, and the last ~30K on RL.
[/quote]
My 01 F150 is still on the original cats, it ran SL for most of its life, and the last ~30K on RL. [/quote]
bet that thing is clean. got any fill hole pics?
My 01 F150 is still on the original cats, it ran SL for most of its life, and the last ~30K on RL. [/quote]
bet that thing is clean. got any fill hole pics?
- Status
Similar threads
