mobil 1 sythetic 10w 30

 

Currently using 10w30 Royal Purple.

Switching back to Mobil 1 10w30 next oil change (approx. 2000-3000 miles from now).

I used to switch to 5w30 for the winter, but I have an engine block heater now, so now I don't.

 

is valvoline oil synthetic good to run throught a 1996 360 v8 with 117000 miles on it

 

Has it used convential all it's life?

 

i have no clue i just got the truck 2 months ago and its time for a oil change the previous owner didnt tell me what he used
what do you think?

 

I would do a High Mileage oil like Max Life or GTX and a good oil filter (No Fraps!!! Purolators, WIX, or Mobil 1) for about 3 oil changes then do the Synthetic. I was in the same position as you are when my dad and I got Purpl. We did not know what oil to use, so we just used the way above. Hope this helps!

 

Amsoil 5w30 = the *****.

 

Valvoline SynPower = *****

Nuff said.

 

going to a 15w wont make a difference at high temps, only when the oil is cold, its the 40 part thats important for you in those temps . For example with 15w40, the 15 indicates the viscosity of the oil at a cold temperature, while the 40 indicates the viscosity at operating temperature.
.............and the w means winter, not weight.

 

i use gtx high mileage 10w-30....i think... lol but ive got a little over 187000 miles on it and it still runs fine besides the burning of 2 quarts a month lol actually i think its about overdue for an oilchange... prety sure its way overdue... about 5000 miles worth... crap