'08 CRV swap Delo 5w-40 for VRP 5W-20 or 30?

[Sequoiasoon]

My daughters '08 CRV with 247.5k on it, just under 900 miles on the oil. She said since last oil change a month ago power seems to be down and sounds different at idle like not as smooth. MPG's down slightly. I drove it today and it does seem to have lost a bit of it's pep. Could be other things but tires are filled the same. Gas station for fill ups the same. Air filter recently changed, plugs only have about 20k on them (NGK Ruthenium). Valves were adjusted at Honda dealer at about 220k. It's had Gumout Multi-tune at least 2x/year and at least one BG44k about 1.5 years ago. Use is local around town and trips to school, about 8k per year for last 5 years since we got it.

I had the same oil combination in it last time but that was more late winter/spring time and she didn't say anything then. Prior oil to that was PP Euro L 5W-30 with 1qt HPL. She's not your typical girl and pretty in tune with her car, odd noises etc. When she said things in past I found issues even if small. (brakes, power steering, exhaust, tires)

Since I have the oil here in my stash I'm contemplating just swapping to VRP 5W-20 or 5W-30 and try if it makes a difference. I'd save the Delo for the Renegade possibly (filter it anyway).

From what I find.
Delo 5W-40 KV100 = 15.4
PP Euro L 5W-30 KV100 = 11.9
VRP 5W-20 KV100 = 8.4
VRP 5W-30 KV10 = 10.8

Thoughts from the group? It won't get extended drains, I'm doing pretty much 5000 mile changes on my small fleet. I'd probably drain the filter as best as possible and reinstall. I'd hate to waste an old school Honda A01 Filtech.

I'm interested in trying the VRP anyway to clean up more and was planning for future anyway but after more stash got used. I also still have M1 Vanilla 5W-30, PP Euro L 5W-30, 3-4 qts HPL PCMO 5W-30, VRP 0W-20, VRP 5W-20, VRP 5W-30.

 

[Hirev]

I've put XXw-40 in a few 4 cylinder vehicles over the years and it always seem to zap the power right out of them.

 

[THORROMIG]

That 5W40 Delo is too thick for that engine. Tried M1 0W40 in my 2008 Acura TL 3.2L VTec when I still owned it years back. Instantly sluggish from the beginning. Didnt even run it 100 miles. Switched it out for a 20 weight full synthetic and it was back to smooth sailing. Honda & Toyota 4 & 6 cylinder engines like 20 weight -- just my opinion.

 

[FZ1]

My daughters '08 CRV with 247.5k on it, just under 900 miles on the oil. She said since last oil change a month ago power seems to be down and sounds different at idle like not as smooth. MPG's down slightly. I drove it today and it does seem to have lost a bit of it's pep. Could be other things but tires are filled the same. Gas station for fill ups the same. Air filter recently changed, plugs only have about 20k on them (NGK Ruthenium). Valves were adjusted at Honda dealer at about 220k. It's had Gumout Multi-tune at least 2x/year and at least one BG44k about 1.5 years ago. Use is local around town and trips to school, about 8k per year for last 5 years since we got it.

I had the same oil combination in it last time but that was more late winter/spring time and she didn't say anything then. Prior oil to that was PP Euro L 5W-30 with 1qt HPL. She's not your typical girl and pretty in tune with her car, odd noises etc. When she said things in past I found issues even if small. (brakes, power steering, exhaust, tires)

Since I have the oil here in my stash I'm contemplating just swapping to VRP 5W-20 or 5W-30 and try if it makes a difference. I'd save the Delo for the Renegade possibly (filter it anyway).

From what I find.
Delo 5W-40 KV100 = 15.4
PP Euro L 5W-30 KV100 = 11.9
VRP 5W-20 KV100 = 8.4
VRP 5W-30 KV10 = 10.8

Thoughts from the group? It won't get extended drains, I'm doing pretty much 5000 mile changes on my small fleet. I'd probably drain the filter as best as possible and reinstall. I'd hate to waste an old school Honda A01 Filtech.

I'm interested in trying the VRP anyway to clean up more and was planning for future anyway but after more stash got used. I also still have M1 Vanilla 5W-30, PP Euro L 5W-30, 3-4 qts HPL PCMO 5W-30, VRP 0W-20, VRP 5W-20, VRP 5W-30.

20w

 

[KCJeep]

Never really ever a reason to run a 20 grade other than warranty concerns, 5w30 VRP all the way.

 

[GSCJR]

I have 15w-40 SuperTech in ours and feel no difference from the 5w-20 that was in it last; I say leave it in. I just topped up ours tonight with 10w-40 SuperTech because 15w-40 is nowhere to be found in quarts.

 

[cptbarkey]

Its not the oil. Spark plugs, coils. Diagnose the issue.

 

[rollins.]

A snaphot from a non-US 2018 CR-V onwer's manual . xw-30 ; -40 is totally fine with k20/k24 . And 20 years ago , when the US market had already demanded sae xw-20 oils Euro owner's manuals would not even mention low visc. grades.

 

[JavierH19]

Going from an oil that has a kv100 of 10 to 14 is definitely going to hurt power... It's not the oil it's something else. I'm using 5w-40 instead of 0w-20 in a 2.4 Mitsubishi and the engine runs the exact same, has the same throttle response, doesn't feel down on any power, but it is so quiet at idle.

Only in the winter does the 15w-40 in my old trucks make them slightly sluggish leaving the driveway but once they warm up they free rev like always. In the summer they're not sluggish in the cool mornings.

Could just be a slightly clogged air filter or a mass airflow sensor. Oil has never made an engine less smooth at idle. maybe more rattly or more quiet but not vibrate or have a rough idle.