Guys -
One of my co-workers, a very good guy, has retired his old Ram 1500 ('03?) and replaced it with a 2016 Ram 1500. He used 5w-30 and 10W-30 seasonally in the old one, but the new one calls for 5W-20 year-round. So, he has a stash of Mobil 1 10W-30 he's willing to sell me quite cheaply - $50 for two 4.4 litre jugs plus a bunch of single litres. (I know, that's likely more than you pay new in the US, but here a jug of Mobil 1 runs about $50 except when it goes on sale for around $32. The individual litres run about $12 each. Plus, we pay 13% sales tax - so, the stash new and on sale would cost me about $80 plus tax, so north of $90.)
So last fall I standardised on Mobil 1 5W-30 for my 'fleet' - my wife's and my '09 Mazda 5 (Duratech 2.3 calling for 5W-20), '97 MPV 3.0 calling for 5W-30/10W-30, and son's '02 Protege 1.6 calling for 5W-30/10W-30.
The MPV is driven so little that I will change the oil only one/year and so will stick with 5W-30 year-round.
I can use the 10W-30 in the Protege in the summer.
Here's my question - Is it reasonable to run the Duratech in the 5 on 10W-30 in the summer? I'll go back to 5W-30 in the Fall, given our cold winters. (FWIW, per the owner's manual, 5W-20 is spec'd for Canada, the US, Puerto Rico, and Mexico. For Mexico only, 5W-30 is allowed as a substitute if 5W-20 is not available. 10w-30 is not mentioned.)
Thanks in advance for your thoughts.
One of my co-workers, a very good guy, has retired his old Ram 1500 ('03?) and replaced it with a 2016 Ram 1500. He used 5w-30 and 10W-30 seasonally in the old one, but the new one calls for 5W-20 year-round. So, he has a stash of Mobil 1 10W-30 he's willing to sell me quite cheaply - $50 for two 4.4 litre jugs plus a bunch of single litres. (I know, that's likely more than you pay new in the US, but here a jug of Mobil 1 runs about $50 except when it goes on sale for around $32. The individual litres run about $12 each. Plus, we pay 13% sales tax - so, the stash new and on sale would cost me about $80 plus tax, so north of $90.)
So last fall I standardised on Mobil 1 5W-30 for my 'fleet' - my wife's and my '09 Mazda 5 (Duratech 2.3 calling for 5W-20), '97 MPV 3.0 calling for 5W-30/10W-30, and son's '02 Protege 1.6 calling for 5W-30/10W-30.
The MPV is driven so little that I will change the oil only one/year and so will stick with 5W-30 year-round.
I can use the 10W-30 in the Protege in the summer.
Here's my question - Is it reasonable to run the Duratech in the 5 on 10W-30 in the summer? I'll go back to 5W-30 in the Fall, given our cold winters. (FWIW, per the owner's manual, 5W-20 is spec'd for Canada, the US, Puerto Rico, and Mexico. For Mexico only, 5W-30 is allowed as a substitute if 5W-20 is not available. 10w-30 is not mentioned.)
Thanks in advance for your thoughts.