Never using a 40wt oil again!!

[yowps3]

Just drained the 0w40 oil and replaced with a 5w40

Woahh my car now revs and accelerates so lively. The 40wt slugs the engine and surely saps power. Didn't think the oil could make so much difference.

The manual recomends both 5w30 and 5w40
I used 0w40 which is meant to be the best out there..

 

[kschachn]

Does it feel like it's in sport mode?

 

[GeorgeKaplan]

So your post contains a typo? It must, otherwise it makes no sense.

 

[spasm3]

You realize that the the two oils you used are in the same viscosity range when warm, no difference. And the 0w40 is probably in the same range as the 5w40 unless its below 0 f.

 

[kschachn]

Yeah I don't think he meant to say 0W-40 to 5W-40. But when you're in a hurry to post some things might get mixed up.

 

[kschachn]

So did you use the amazing ultimate Kixx oil you were promoting earlier?

 

[atikovi]

I once used 70wt in a car with a crack or hole in the block that wouldn't hold water. If it was below 60F, it wouldn't crank fast enough to start. Can't imagine 40wt would be any problem as long as it was above freezing temperatures.

 

[Kira]

I was thinking typo too. I bet he put 15W-40 in his car.

 

[ofelas]

15w40 works quite nicely in my pickup in unaided cold starts all the way down to -10/-15f FWIW.

 

[yowps3]

Sorry typo!!
I drained 0w40 and filled with 5w30

 

[BigShug681]

Originally Posted by yowps3
Just drained the 0w40 oil and replaced with a 5w40

Woahh my car now revs and accelerates so lively. The 40wt slugs the engine and surely saps power. Didn't think the oil could make so much difference.

The manual recomends both 5w30 and 5w40
I used 0w40 which is meant to be the best out there..

With such seat of the pants increase I can only imagine that switching to a much thinner oil will increase power out put possibly 10x that of what it was rated at the factory spec

 

[yowps3]

Originally Posted by BigShug681
With such seat of the pants increase I can only imagine that switching to a much thinner oil will increase power out put possibly 10x that of what it was rated at the factory spec
There is a very noticable increase in response and revs with 5w30.
The 0w40 made the car feel heavy and unresponsive.

 

[spasm3]

I have tried 5w 40 oils in engines in the past. 2001 ford escape v-6. No fuel mileage difference, no difference in how it drives. But in a low output engine, i could understand a difference. I've just never been able to tell.

I have 30wt in my mazda with calls for 0w20. I can't seen any fuel mileage or change in how it runs.

 

[kstanf150]

What's the engine your talking about ??

 

[yowps3]

Originally Posted by kstanf150
What's the engine your talking about ??

Gamma 1.6 T-gdi

Mu

 

[FCD]

Too bad that for my cars 5W-30 is basically water.

 

[MrMoody]

Interesting, I had been planning on switching ours to xW40 at some point.

 

[kstanf150]

If 5W-30 makes that much difference in how the engine performs, then I see no reason to use anything else.
Buy whatever is readily available that meets the specs for your engine and change it on a regular schedule and you'll be fine.

 

[Triple_Se7en]

Originally Posted by yowps3
Just drained the 0w40 oil and replaced with a 5w40

Woahh my car now revs and accelerates so lively. The 40wt slugs the engine and surely saps power. Didn't think the oil could make so much difference.

The manual recomends both 5w30 and 5w40
I used 0w40 which is meant to be the best out there..


Are we supposed to guess what brand you used?

Wait - you never mentioned the vehicle make/model either .... concerning the owners manual wording you mentioned.
Is this another secret?

 

[benjy]

oil viscosity should be selected with your ambient temps in your area. yes oils that have a thinner running viscosity will make more power unless said thinner oil causes more consumption + IMO forget any xx-20 oils unless in very cold winter temps. todays mostly fake synthetics flow better overall as well as protect better in the heat, + for extremes theres real synthetic oils at a much higher cost