Thanks for the link to the other post, since I missed it. Sorry, the new viscosity should have been 8.6 not 8.65, since I wasn't reading specs for "Edge with Titanium," but rather "Edge with Syntec."
Opinions on redline 5w20...
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Originally Posted By: jaj
Originally Posted By: A_Harman
I have a hard time believing that an Xw20 can have HTHS of 3.5 or higher. Can you post a link to a spec sheet for SLX Professional 5w20 that shows it? Castrol's spec sheets in North America don't usually show such good information.
I have the link to the Castrol product datasheet, but it's dead. The same product now has a new datasheet saying HTHS of 2.7 cP. Sigh. I guess we're stuck with Redline or Motul to get that mix of high HTHS and low bulk viscosity.
Castrol data sheets. SIGH. Like trying to nail down a shadow in the shade.
Originally Posted By: A_Harman
I have a hard time believing that an Xw20 can have HTHS of 3.5 or higher. Can you post a link to a spec sheet for SLX Professional 5w20 that shows it? Castrol's spec sheets in North America don't usually show such good information.
I have the link to the Castrol product datasheet, but it's dead. The same product now has a new datasheet saying HTHS of 2.7 cP. Sigh. I guess we're stuck with Redline or Motul to get that mix of high HTHS and low bulk viscosity.
Castrol data sheets. SIGH. Like trying to nail down a shadow in the shade.
Originally Posted By: Ben99GT
Originally Posted By: CATERHAM
I know Dave pushes their 5W-20; call me cynical but I think the reason is the much higher profit margin on that oil vs their superior and more expensive to formulate 0W-20.
I think Dave pushes it because he sees 5W-20 as a more suitable "hard use" oil than 0W-20, which is what Red Line is really all about.
For most V8s give me the 5W-20 any day. I'd MUCH rather a 3.3 HTHS oil when I'm going WOT on a 100 degree day with 7000 lbs hooked up to the truck, which is way more common for me than a sub-zero cold start. My truck doesn't even have a factory oil cooler.
If 5W-20 has an HTHS of 3.3 then I have two questions:
1) Why need 0W-20? HTHS of 3.3 seems like it would keep wear nice and in control in most engines.
2) What is the fuss over a low VI? Does it matter? Does that not mean that the oil "changes' more from cold to hot, but it being a special 5W-20 more akin to a 30 with much better flow properties than a 5w30, does it matter?
Makes me want to put a quart of 5W-20 in with the 5.0's next fill. It does well on its 5w30, but i like what i am reading regarding wear and heat. the only question is this 0W-20 grade they have..
Surely, this 5W-20 is virtually the same as their 0W-20 in Texas heat, in an engine i want to keep for a long time, having just come off heavier oils with this new thinking about how the engine is actually lubricated?
Originally Posted By: CATERHAM
I know Dave pushes their 5W-20; call me cynical but I think the reason is the much higher profit margin on that oil vs their superior and more expensive to formulate 0W-20.
I think Dave pushes it because he sees 5W-20 as a more suitable "hard use" oil than 0W-20, which is what Red Line is really all about.
For most V8s give me the 5W-20 any day. I'd MUCH rather a 3.3 HTHS oil when I'm going WOT on a 100 degree day with 7000 lbs hooked up to the truck, which is way more common for me than a sub-zero cold start. My truck doesn't even have a factory oil cooler.
If 5W-20 has an HTHS of 3.3 then I have two questions:
1) Why need 0W-20? HTHS of 3.3 seems like it would keep wear nice and in control in most engines.
2) What is the fuss over a low VI? Does it matter? Does that not mean that the oil "changes' more from cold to hot, but it being a special 5W-20 more akin to a 30 with much better flow properties than a 5w30, does it matter?
Makes me want to put a quart of 5W-20 in with the 5.0's next fill. It does well on its 5w30, but i like what i am reading regarding wear and heat. the only question is this 0W-20 grade they have..
Surely, this 5W-20 is virtually the same as their 0W-20 in Texas heat, in an engine i want to keep for a long time, having just come off heavier oils with this new thinking about how the engine is actually lubricated?
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If your main concern is fuel economy, the 0w20 would be better than the 5w20 by a couple of percent. The 3.3 HTHS of Red Line 5w20 actually makes it as viscous as a 30-weight when it is being sheared in your bearings, so the fuel economy would be the same as a 30-weight.
The 5w20 will behave very differently in the Texas heat than the 0w20 because the HTHS viscosity is ~20% higher. This means a thicker oil film and possibly lower wear when the oil is hot.
The 5w20 will behave very differently in the Texas heat than the 0w20 because the HTHS viscosity is ~20% higher. This means a thicker oil film and possibly lower wear when the oil is hot.
I always thought a Honda Accord would do 250,000 miles on Crisco...
I couldnt help myself.....
I couldnt help myself.....
You're right, so run the cheapest 5w20 conventional you can find.
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