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5w30 #5409780 04/21/20 07:12 PM
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tiger862 Online Content OP
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I have ran manufacturers recommended oil all my life up and until this week. I got use to sounding like a truck at 1500 rpms as well as noises on first start as all searches points to normal. Lots of the ones that brought to the dealer had tons of work done before being told normal so I expected nothing to change. I ran 5w20 for 15k either synthetic or a blend with no difference. I went with 5w30 this time due to a sale knowing not recommended but ok so I expected if anything fuel mileage would take a hit although previous years fuel mileage EPA rating was same for both grades so don't know what changed as all parts interchangeable. Anyhow all was the same for 20 miles then I can't explain as it got smoother and quieter. Fast forward to today and the shift points are similar to ECO button pressed but I can only tell if it shifts by looking at tach so that doesn't make sense. Noise is almost completely gone both at first start as well as 1500 rpm with 50 miles driven. Could this be engine is built with 30 grade in mind but FCA went with 5w20 for Cafe although EPA Fuel Mileage is the same?
2018 Grand Caravan


Tiger862
2018 Grand Caravan
Re: 5w30 [Re: tiger862] #5409786 04/21/20 07:18 PM
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CT8 Offline
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It is a subject not worth pondering for all the reasons you are stating.


2015 F150 2.7
2018 F350 6.2
Re: 5w30 [Re: tiger862] #5409797 04/21/20 07:26 PM
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From a quick glance of the Wiki it looks like all 2011+ Grand Caravans use the 3.6L Pentastar V6, and I looked up the 2012 Manual and it says to use 5w30, so I'm guessing that the engine was probably designed for 30 weight and back spec'd to 20 to win over some point with Big Brother. If everything seems to be running better with 30 stick with it.

Re: 5w30 [Re: tiger862] #5409800 04/21/20 07:30 PM
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skyactiv Offline
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The EPA numbers on the window sticker are self reported to the agency. The EPA doesn't conduct the test, the vehicle manufacture does under a set of rules established by the EPA.
One thing little known is that every 1/10 of 1 MPG counts, but isn't shown on the sticker. EPA penalty wise, the penalty is $5.50 for each 1/10 of 1 MPG. THIS IS WHERE LIGHTER OILS MATTER. You want you fuel efficient cars to offset the gas guzzling non exempt vehicles by the CAFE rule. Correct me if I'm wrong.


Wife: 15' Audi A4 quattro 6 speed manual
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The rude guy that points out reality


Re: 5w30 [Re: tiger862] #5409802 04/21/20 07:34 PM
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OilUzer Offline
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just curious , what brand of oil are you using now and then?
Your new oil could have more moly or ester.

Re: 5w30 [Re: tiger862] #5409809 04/21/20 07:48 PM
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Any engine "specified" for xW-20 is going to run fine (if not better) on xW-30. If only 5W-30 was available in the world, it would run fine in 99% of the cars on the road.

When someone or some article says an engine was "designed for a specific viscosity of oil", it's full of bull.

Re: 5w30 [Re: tiger862] #5409812 04/21/20 07:53 PM
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wemay Offline
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That's a pretty wide net you're casting. Also known as a blanket statement. whistle


2019 Volkswagen Passat Wolfsburg TSI: VW OE 0W-20, OE o.filter
2013 Hyundai Santa Fe Sport 2.0T: RGT 5W-30, OE o.filter
Re: 5w30 [Re: OilUzer] #5409824 04/21/20 08:05 PM
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tiger862 Online Content OP
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Originally Posted by OilUzer
just curious , what brand of oil are you using now and then?
Your new oil could have more moly or ester.

It came with Pennzoil then I have ran Valvoline, Napa, Havoline all in 5w20. This oil change was Pennzoil Platinum 5w30 so I don't think name on bottle had anything to do with it.


Tiger862
2018 Grand Caravan
Re: 5w30 [Re: tiger862] #5409837 04/21/20 08:19 PM
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oldhp Offline
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2014 RAM 1500(traded in), 2017 Jeep Wrangler Unlimited(sold), current 2019 Dodge Charger SXT, current 2018 RAM 1500 all had/have 3.6 in them. "All" of them, without a doubt, are quieter, smoother with 5W30 in them. Mainly Pennzoil Platinum, also PYB, Mobil 1, and NAPA Synthetic. cheers


"None of us are getting out here alive...drink that beer...eat that pizza...drive that Hot Rod"
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Re: 5w30 [Re: skyactiv] #5409838 04/21/20 08:21 PM
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bbhero Online Content
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Originally Posted by skyactiv
The EPA numbers on the window sticker are self reported to the agency. The EPA doesn't conduct the test, the vehicle manufacture does under a set of rules established by the EPA.
One thing little known is that every 1/10 of 1 MPG counts, but isn't shown on the sticker. EPA penalty wise, the penalty is $5.50 for each 1/10 of 1 MPG. THIS IS WHERE LIGHTER OILS MATTER. You want you fuel efficient cars to offset the gas guzzling non exempt vehicles by the CAFE rule. Correct me if I'm wrong.

A really good post here in my opinion ↑↑↑↑


Nissan Altima 3.5 Coupe
Cam2 Full synthetic 5w30 Carquest Blue 84356
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Re: 5w30 [Re: tiger862] #5409850 04/21/20 08:31 PM
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tundraotto Offline
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^yup - agree.

Re: 5w30 [Re: tiger862] #5409874 04/21/20 09:06 PM
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CT8 Offline
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I never knew an engines was designed for a certain viscosity oil.


2015 F150 2.7
2018 F350 6.2
Re: 5w30 [Re: tiger862] #5409897 04/21/20 09:44 PM
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OilUzer Offline
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Originally Posted by tiger862
Originally Posted by OilUzer
just curious , what brand of oil are you using now and then?
Your new oil could have more moly or ester.

It came with Pennzoil then I have ran Valvoline, Napa, Havoline all in 5w20. This oil change was Pennzoil Platinum 5w30 so I don't think name on bottle had anything to do with it.


You'd be surprised. However PP is one of the smoother oils ...
I've never bought any xW20 oil. Min for me is 5W30. Your car should be fine. you can also try 10W30 especially in summer.

Re: 5w30 [Re: tundraotto] #5409919 04/21/20 10:11 PM
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Gebo Offline
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Originally Posted by tundraotto
^yup - agree.


I agree to agree +2


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
Re: 5w30 [Re: skyactiv] #5409920 04/21/20 10:12 PM
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Gebo Offline
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Originally Posted by skyactiv
The EPA numbers on the window sticker are self reported to the agency. The EPA doesn't conduct the test, the vehicle manufacture does under a set of rules established by the EPA.
One thing little known is that every 1/10 of 1 MPG counts, but isn't shown on the sticker. EPA penalty wise, the penalty is $5.50 for each 1/10 of 1 MPG. THIS IS WHERE LIGHTER OILS MATTER. You want you fuel efficient cars to offset the gas guzzling non exempt vehicles by the CAFE rule. Correct me if I'm wrong.


Try as I might, I cannot correct correct. Word....
banana


'98 LEX LS400 310K
'02 4Runner 250K
'05 Lex LS430 90K
'07 Lex GX470 75K

Shell Gas and Truck 5w-30
Amsoil OE 10w-30
Toyota ATF's and Coolant
Amsoil Gear Oil and Grease
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