Switching to Mobil 1 HM 5W-20

[CivicLX]

Hi all,

04 Honda Civic 1.7 not Vtec
99K miles on it
The previous owner have run mostly Kendall blend after 75k miles kendall high mileage with OCI around 5K.

Now, I am running MSS 5W-20 and I recently got a Mobil 1 HM 5W-20, 5-quart jug was $22 so could not resist for that price. The car does not burn any oil but there is little coming out from the valve cover seals. It is not a leak though.

Hot&humid climate, mostly easy drive! one way 5 miles commute. Sometimes stop&go traffic. I also do some trips on highway.

I heard that Mobil 1 HM is a good cleaning oil so I dont see any reason not to run this oil. I also checked the viscosity values because everybody says HM oils are on the thicker side. I don't want my MPG decrease so here is the values for MSS and M1 HM

Mobil 1 HM 5W-20 (API SL)

SAE Grade
Viscosity (ASTM D445)
cSt @ 40 ºC 50.1
cSt @ 100 ºC 8.6
Viscosity Index 150
HTHS Viscosity, mPa•s @ 150 ºC (ASTM D4683) 2.7
Pour Point, ºC, (ASTM D97) -42 -
Flash Point, ºC, (ASTM D92) 244
Density @15.6 ºC g/ml (ASTM D4052) 0.856

Mobil Super Synthetic 5W-20

API Service Classification SN
Gravity, API 34.9
Specific Gravity 0.850
Pour Point -39°C (-38°F)
Flash Point, ASTM D92 234°C (453°F)
cSt at 40°C 49.6
cSt at 100°C 8.8
CCS, cP 4670 @ -30°C
MRV, cP 13,200 @ -35°C
Viscosity Index 158


Viscosity values are very similar but viscosity index of Mobil 1 HM is lower than MSS.

Would it be okay to run Mobil 1 HM? or should I return it and get M1 5w-20

 

[901Memphis]

It would be okay to use either interchangeably. You probably don't need a high mileage though.

 

[bourne]

Go for it !

 

[chubbs1]

M1 HM is the best cleaning oil you can buy IMHO. I have seen it do pretty amazing things and I was a Pennzoil fanboy for cleaning (to be fair Pennzoil Plat and Ultra do clean, just not as much in a short amount of time as M1 HM. Give it a try!

 

[94JeepCherokee]

Go for the Advanced Fuel Economy 0W-20!

 

[JavierG]

I would have stuck with Kendall. Great oil when you can find it.

 

[Clevy]

High mileage oils are made for helping gaskets. I bet it stops the weeping.

 

[Alex38]

Originally Posted By: Clevy
High mileage oils are made for helping gaskets. I bet it stops the weeping.


My thoughts as well. What you bought was exactly what I would have done if it were mine.

 

[Boss302fan]

I acutally use Mobil 1 HM in my sons car and it seems to work very well. He has zero leaks, so I am now thinking about just using PP. I would think either oil would be fine...

PP can help stop leaks or prevent them, right? I thought most syn oils have stop leak additives...