Will 5W20 be ok to use in the hot Texas summers? From mid June till the end of August the temperature ranges from 95 to 105 degrees just about everyday in the D/FW area. I have always put 10W30 in everything all year long. The cars I have now are the first cars I have used 5W20, well in the one I have done a oil change on. I knew 5w20 would be ok for the winter, but both cars will be due for a change around June. Both cars have GDI engines and I normally use dino or a synblend, the only reason I have Synpower in the Forte now is because of the roll back price at wal mart with the $5 dollar Valvoline coupon a few months back made it too good of a deal to pass up. So will the 5W20 be ok or should I use 5w30 for the summer?
5W20 in summer?
- Thread starter Texican
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It doesn't cause any problems in my Kia and I live in Austin.
If it was me, I'd use a top quality 5w-20 with confidence. But if I wanted to do a 4-6 month OC again in Oct/Nov/Dec I certainly could use a 5w30 in June. I live in NC (also plenty hot) and my personal mechanic suggests sticking with 5w-20 year round due to the closer tolerances and tight oil pathways in Hyundai's newer motors. Not sure if that's fact or myth.
Quote:
2014 KIA FORTE 2.0L 4-cyl Engine Code [7]
LUBRICANTS & FLUIDS:
Engine Oil
Grade 1......SM
Maximum Performance SAE 5W-20 Signature Series 100% Synthetic Motor Oil (ALMQT)
Performance Plus XL 5W-20 Synthetic Motor Oil (XLMQT)
Performance OE 5W20 Synthetic Motor Oil (OEMQT)
Above 0 F......10W-30
All TEMPS......5W-20, 5w30 [1]
[1] SAE 5W-20 is preferred.
2014 KIA FORTE 2.0L 4-cyl Engine Code [7]
LUBRICANTS & FLUIDS:
Engine Oil
Grade 1......SM
Maximum Performance SAE 5W-20 Signature Series 100% Synthetic Motor Oil (ALMQT)
Performance Plus XL 5W-20 Synthetic Motor Oil (XLMQT)
Performance OE 5W20 Synthetic Motor Oil (OEMQT)
Above 0 F......10W-30
All TEMPS......5W-20, 5w30 [1]
[1] SAE 5W-20 is preferred.
Try PP 5w30
5w20 all year is ok and will actually be better in most cases. 5w20 runs cooler, gets everywhere slightly faster and is more stable in most cases.
Hyundai / Kia I believe state in their owners manuals that 5W20 (what is stamped on the oil fill cap) is prefered - however based on ambient temps you can safely use 5W30 or 10W30 as well ... This is what my 2010 Elantra owners manual states (2014 owners manuals stating the same ?)
I have found SOPUS products (Pennzoil / Quaker State) to run the best in my Hyundai and I have stayed with the recommended 5W20 with no issues year round with proper OCI's (5K miles for dino / 7.5K miles for synthetic - using Hyundai / KIA OEM oil filters which are excellent). I did use a summer run of 5K miles with Mobil Super 5000 5W30 and found that for the first 1.5 miles my engine was a bit "baulky" and slower to warm up versus using the 5W20 where a smooth emgine warm up transition (i.e. less baulky) was realized - gas mileage with both grades of oil was about the same ... So based on my experiences - I have stayed with the recommended 5W20 weight oil and for various reasons I use either QSUD 5W20 or PP 5W20 for best results .
I have found SOPUS products (Pennzoil / Quaker State) to run the best in my Hyundai and I have stayed with the recommended 5W20 with no issues year round with proper OCI's (5K miles for dino / 7.5K miles for synthetic - using Hyundai / KIA OEM oil filters which are excellent). I did use a summer run of 5K miles with Mobil Super 5000 5W30 and found that for the first 1.5 miles my engine was a bit "baulky" and slower to warm up versus using the 5W20 where a smooth emgine warm up transition (i.e. less baulky) was realized - gas mileage with both grades of oil was about the same ... So based on my experiences - I have stayed with the recommended 5W20 weight oil and for various reasons I use either QSUD 5W20 or PP 5W20 for best results .
Yeah that oils seems thin when its warm. After talking to some oil reps. I'd alsomost run a good 10w30 synthetic, it is suppose to flow the same as a 5w-20 cold. I had asked the RP rep cause the 5.4 fords state 5-20 & he suggested with a good synthetic in the summer it would just as well or better than most 5-20? idk
I run 5w30 in wife's '13 Hyundai and Daughters '07 Kia during summer months.
Originally Posted By: NormanBuntz
If it was me, I'd use a top quality 5w-20 with confidence. But if I wanted to do a 4-6 month OC again in Oct/Nov/Dec I certainly could use a 5w30 in June. I live in NC (also plenty hot) and my personal mechanic suggests sticking with 5w-20 year round due to the closer tolerances and tight oil pathways in Hyundai's newer motors. Not sure if that's fact or myth.
Mostly myth... If passages were too small to oil properly with 30 vs 20, the engine would burn up from oil starvation on the first cold morning when the 20W is 15-20x thicker than at operating temp...
Tolerance has zero to do with smaller size passages, just means engine assembly is closer to specs than a wide tolerance engine that may be looser or tighter(or some combination of both)...
If it was me, I'd use a top quality 5w-20 with confidence. But if I wanted to do a 4-6 month OC again in Oct/Nov/Dec I certainly could use a 5w30 in June. I live in NC (also plenty hot) and my personal mechanic suggests sticking with 5w-20 year round due to the closer tolerances and tight oil pathways in Hyundai's newer motors. Not sure if that's fact or myth.
Mostly myth... If passages were too small to oil properly with 30 vs 20, the engine would burn up from oil starvation on the first cold morning when the 20W is 15-20x thicker than at operating temp...
Tolerance has zero to do with smaller size passages, just means engine assembly is closer to specs than a wide tolerance engine that may be looser or tighter(or some combination of both)...
Not much reason to use a 10w30 synthetic when a 5w30 synthetic is superior in almost every way.
Originally Posted By: Texican
Will 5W20 be ok to use in the hot Texas summers?
This question requires only a one-word answer: Yes.
Will 5W20 be ok to use in the hot Texas summers?
This question requires only a one-word answer: Yes.
I use 5W20 in a hotter climate than that.
Not impressed with some UOAs in Hyundai/KIA engines on 5w20. Since your in TX, have a GDI engine and the manual/warranty allows 5w30 I can't imagine any reason to run a 5w20. JMO.
Originally Posted By: KCJeep
Not impressed with some UOAs in Hyundai/KIA engines on 5w20. Since your in TX, have a GDI engine and the manual/warranty allows 5w30 I can't imagine any reason to run a 5w20. JMO.
Since I like using synblends, with the 5W30 I have the pennzoil blend with 50% synthetic as an option and the GTX blend 5W30 has 50% synthetic as well. The 5W20 GTX blend only has 10% and I haven't seen the pennzoil blend in 5W20 anywhere.
Not impressed with some UOAs in Hyundai/KIA engines on 5w20. Since your in TX, have a GDI engine and the manual/warranty allows 5w30 I can't imagine any reason to run a 5w20. JMO.
Since I like using synblends, with the 5W30 I have the pennzoil blend with 50% synthetic as an option and the GTX blend 5W30 has 50% synthetic as well. The 5W20 GTX blend only has 10% and I haven't seen the pennzoil blend in 5W20 anywhere.
You've seen them on here?
And if the ones you have seen are not impressive was it due to the oil viscosity?
Originally Posted By: KCJeep
Not impressed with some UOAs in Hyundai/KIA engines on 5w20.
And if the ones you have seen are not impressive was it due to the oil viscosity?
Originally Posted By: KCJeep
Not impressed with some UOAs in Hyundai/KIA engines on 5w20.
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