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I have been using Mobil EP 5W-30 since 2016. Recent years, rumors around that Mobil EP oil quality is going downhill without break, and there isn't even Group 3 plus in it. Is this the case?

Honda not allowing Energy/Resource conserving oil to be used on its scooters, e.g PCX and Forza 350. Don't know if it is the case for non-scooters. Mobil AFE is Energy/Resourse consering. But I can't see any specs different from other oils, e.g EP/ESP... Why? If I go ahead with AFE, does it...

My bike manual requires using 10W-30 oil, can I use 0W-30 Mobil ESP instead, any difference? Is 0W better or inferior?

gentle climate, but hot in summer. which one is better generally speaking? or do they serve different riding style or else? Thank you.

Only a few hundred miles from last change. Can anyone kind to enlight on possible causes. bad oil or what? Thanks.

is it possible to know the concentration %

My Honda PCX scooter, with Mobil fs 0w-40, smooth as silk. I changed to EP 5-30, rough, very discernable rough. Is it normal? the scooter recommends 10W-30.

1# AP 5W-30, 11.7 @100C, but HTHS only 3.0, comparing shell 5W-30, 12@100C, BUT HTHS 3.5. Huge difference, why is it so? Mobil formulate it on purpose? Isn't it true that higher HTHS is a better thing? 2# No data about viscosity @40C Any expert shed some light? Mobil says, AP has the best...

Could anyone enlighten me. Thanks. I saw Mobil 1 0W-40 with 1.2% of Sulfated Ash, whereas, EP and 5W-30 only 0.8%. Pros and Cons? why 40 is high on ash? Thanks again.

Which one is better? Generally speaking?

I am looking for an good oil for my Honda scooter. The Red Line looks good, 12 viscosity and very high HTHS of 3.6 v.s Mobil 1 of 11 viscosity and HTHS 3.1. Red Line ester-based, and much more expensive. So, is Red Line a good choice? better than Mobil 1? Thank you very much.

ESP: 100 Viscosity 12, HTHS 3.5, looks tough. Standard: 100 viscosity 11, HTHS 3.1 ESP appears to be the perfect fit for my needs, i.e. not very thin with good HTHS. I am guessing, there must be a downside to ESP, it can't be all good with no bad. Thanks.

Caught between the two. The mannual says 10W-30. I am wondering apart from more fuel consumption, what other disadvantages does the 40 oil have? Is it true that the 40 oil protect engine better than the 30? Thank you.

My scooter "Honda PCX" mannual says: gear oil, 10W-30, MB, SL which is also the recommended engine oil. I found motorbike gear oil specs: Motul, 80W-90 GL-5 and Speedmaster, 85W-140, GL-5. Huge difference by the look of numbers, 10W-30 v.s 80W-90 even 85W-140, and API SL v.s API GL-5. So...

Mannual states 10W-30, MB, SL. My riding behaviour: short daily urban trips 10-20km with occasional long-haul tour up to 5000 miles. I am thinking using Mobil 0W-30, but concern it may not provide enough protection for intense driving, therefore lean towards 0W-40. So, which one is better?