had a bad experience using 5w-20 in an application that spec's 5w30?
Has anyone..
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Hermann
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Not here, I used it MC 5-20 in my 2000 Focus which spec'ed 5w30..
Who knows, but why? Dance with the spec they wrote ya..
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No issues in a 92 3.0 V6 Mitsubishi ..nor a 91 3.0 Vulcan V6 ..and for now ..a 4.0 jeep (jury is still out).
Depends on what you wanna run it in, too, Lonn.. What kind of engine you have in mind?
The 5w30 "Energy Conserving" oils tend to shear to a 20 weight (at least older SL versions). How a Shear Stable 5W-20 could harm a engine that specs a "Shear to 20 weight" oil I fail to see.
If you have a European Car that requires an ACEA A3 >3.5 HT/HS oil then thats a different matter.
If you have a European Car that requires an ACEA A3 >3.5 HT/HS oil then thats a different matter.
I guess Toyota and Ford did or otherwise they would have back spec'd all of the engines that they tried to back spec to 20 weight oils from 30 weight oils. Granted they probably tested them in many scenarios, including simulating the driver who lives in Arizona and often drives 90 mph for several hours. Grandma driving 2 miles to the grocery store is another story.
If it was a 5.60 cSt 5W-20 I would agree with you. However if its damaged by a 9.1 cSt 5W-20 it has no business using a 5w30 that shears to 8.9 cSt within 500 mi either. If I owned an engine that failed to make the transition to 5W-20 it would only be run it with a minimum 3.5 HT/HS oil.
Ford 4.0L V6 engines are still 5w30 and they insist on it. The Focus listed above was back spec'd to 5W-20. Not sure why but they do recommend against it.
So we still use 5w30 in all the new 4.0L V-6 Mustangs, Ranges, and Explorers.
Until the say otherwise. It is one engine I would say use xW-30 in other than that 5W-20.
OK what out for the Ford GT and Shelby Cobra too. Those are 5W-50.
So we still use 5w30 in all the new 4.0L V-6 Mustangs, Ranges, and Explorers.
Until the say otherwise. It is one engine I would say use xW-30 in other than that 5W-20.
OK what out for the Ford GT and Shelby Cobra too. Those are 5W-50.
Is Red Line's 5w-20's HTHS rating of 3.3 much higher than most 5w-20's?
Yes Red Lines HTHS is higher than many 10w30's.
It does no harm to use 1% instead of 2% on my cereal, but I would'nt use 5w20 in any engine... The 5w20 spec is a sham and you have bought into it....
Show me your data to support this.
Lower gas mileage in Honda that speced 5w30, and the car consumed 1 quart of oil per 5000 miles when using 5w20....but the car consumed zero oil when using 5w30 or 10w30.
Mitch why dont you actually explain why a 500 mi old 5w30 that is now 8.9 cSt is superior to a 500 mi old 8.9 cSt 5W-20 since they are now the same viscosity. Is it the 5w30's lower oxidation resistant from lower quality basestocks or the generally lower additive levels.
What product did you use? It is possible that it sheared and then thickened due to oxidation.
Amsoil is an synthetic oil. Which tends to be more shear stable and Amsoil has traditionally be amongest the most shear stable.
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