Using Thicker Oils During Hot Weather

[Snox801]

I can say it’s not a bad idea.
Perfect example. Ford focus rs and the mustang 2.3 track pack. Absolutely zero difference in the engines form the standard 2.3 that calls for 5w30 but both performance cars call for 5w50.
Same with several others. They state 5w30 for daily use and recommend 5w50 for track use. So no it won’t hurt anything.
Keep in mind ford at one point said 5w20 for some engines then fuel dilution became a problem they went right back to 5w30.

Now unless you’re working that engine extra hard in the heat. Say hauling a lot or driving it hard the oil should be ok at 5w30. If it’s like farm use you would be better off going to a colder tstat and keeping operating temps down. Say 160. I have 160 stats in several ecoboost engine now.

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[MaverickMark]

So I live in the Central Valley of California where the summers get pretty hot (can get up to 110+ for months). I have two Mavericks on our farm with 2.0L engines and I’m considering putting a different oil this year for maximum protection. Sometimes we use them for hauling/towing.

I know Ford calls for 5W-30 but I’m considering a thicker oil just for the summertime. I’m thinking of either 10W-30 or 5W-40. Does anyone else use these oils or have any recommendations? Thanks

I live in the central valley too. I use 0W-20 I'm my hybrid year round.

 

[William Buckman]

I worked at Toyota 25 years in powertrain, 15 years in machining and 10 years in QC. The tolerances on the machined parts were generally 20-30 microns. A human hair is 70-120 microns. When I was in QC, we picked a random an engine from the assembly line, run a 3 hour test, tear it down to the crank bearings, then reassemble next day to be in someone's vehicle. Periodically we tested longer times in different norms. One was to freeze the oil (-30°) going into the engine then run for an hour to top temp. This rotation from freeze then run to top temp off and on went for 1 week. The oil (0-W20 full synthetic) was changed every 50 hours. We tore the engine completely down (including head), and evaluated and stored till next engine was tested to compare if there was a difference in quality. The same oil was used for the 4 and 6 cylinder engines. I believe, if it ain't broke, don't fix it.

 

[Tom H]

So I live in the Central Valley of California where the summers get pretty hot (can get up to 110+ for months). I have two Mavericks on our farm with 2.0L engines and I’m considering putting a different oil this year for maximum protection. Sometimes we use them for hauling/towing.

I know Ford calls for 5W-30 but I’m considering a thicker oil just for the summertime. I’m thinking of either 10W-30 or 5W-40. Does anyone else use these oils or have any recommendations? Thanks

for years I've used what the dealer recommended plus I have added a pint of STP and have had 3 cars go over 300000 miles, I haven't changed the oil on my new Maverick since I've only had the truck for 2 months and only have 450 miles on the truck, I plan on using Valvoline 0-20W Synthetic and a Pint of STP Synthetic

Everyone has their opinion so for me I feel it's trial and error

 

[DrEvil]

You'd probably be safe going with a thicker oil, but why? I'd go with the manufacturer recommendation.

They're well aware that folks are using these engines in all kinds of weather conditions, if the owner's manual doesn't list different viscosities for different weather conditions, their recommended oil is OK for all

On Z06 Corvettes for example, the manual specifies using a different oil for track use (15W50 instead of 5W50).

Tells you something right there.

 

[DrEvil]

A search for a replacement Motorcraft thermostat lists a DS7Z8575C, 190 degrees Hybrid, and K2GZ-8575-C, 190 degrees Eco.

 

[The Real Maverick]

Where do you drive that is over 190°F?
Because your engine gets to operating temperature in about 5 minutes and stays at that temperature. In all seasons. Towing or vigorous uphill driving may raise that by 20 degrees.

 

[Tim d]

So I live in the Central Valley of California where the summers get pretty hot (can get up to 110+ for months). I have two Mavericks on our farm with 2.0L engines and I’m considering putting a different oil this year for maximum protection. Sometimes we use them for hauling/towing.

I know Ford calls for 5W-30 but I’m considering a thicker oil just for the summertime. I’m thinking of either 10W-30 or 5W-40. Does anyone else use these oils or have any recommendations? Thanks

If there was a benefit to this ford would recommend it.

 

[DrEvil]

The helicopter in you picture suggests you fly it. Would you use a different lubricant anywhere on it than what was specified by the manufacturer? My nephew flies helicopters for the military.
A minor change in viscosity won't make a big difference in the Maverick, but despite any shortcomings that Ford may have made with it, they tested it pretty thoroughly and expect you to use what they recommend.

Well I don't think helicopters were ever mandated CAFE standards for fuel mileage. That is why thinner oils were developed to improve mandated fleet milage. Correct me if I'm wrong. Don't trust ford with the engineering statement with the high failure rate of hybrid engines. Why did ford recall 660, 000 f150 transmissions last july? All the recalls wow.

 

[DrEvil]

Where do you drive that is over 190°F?

Because your engine gets to that temperature in about 5 minutes and stays at that temperature. In all seasons. Towing or vigorous uphill driving may raise that by 20 degrees.

I don't know about that. My snap on solus scanner says Consistently says Is two hundred and eleven degrees. It's very accurate high end scanner. Does yours say differently?

 

[Tbone289]

What is the source of this information? The thermostat in the 2.0 Maverick is 190 degrees. Part numbers for other 2.0 Ecoboosts also reveal thermostats in the 180-190 degree range. My OBD scans confirm that the thermostat opens at much lower temperatures than 195-210 degrees.

 

[The Real Maverick]

I don't know about that. My snap on solus scanner says Consistently says Is two hundred and eleven degrees. It's very accurate high end scanner. Does yours say differently?

I fixed it to read "operating temperature".

Hybrids run 185°F to 190°F.
If you say EB run hotter; I believe you.

 

[DrEvil]

I don't know about that. My snap on solus scanner says Consistently says Is two hundred and eleven degrees. It's very accurate high end scanner. Does yours say differently?

Just checked my data logs. Temperature has been as high as two hundred and twenty six degrees. My wife's maverick has the 4 k towing with the extra cooling. We have never towed with it. That was with the engine with 9 thousand miles on odometer.

 

[DrEvil]

I fixed it to read "operating temperature".

Hybrids run 185°F to 190°F.
If you say EB run hotter; I believe you.

Okay to answer your question plugged in the scanner. Low speed fan turns on at 205 High speed fan at two twelve. Those are the factory settings 2024 eco awd 4k tow package

 

[DrEvil]

I did not know a scanner Was manufactured to be able to tell you When a thermostat opens. Being that it is a mechanical device. I've never seen a thermostat with an electronic monitoring system. Please correct me if I am wrong. My scanner only tells me when the fans come on.

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