oil recomendations?
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Junior User
Joined: Jul 2001
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oil recomendations?
Hi to all, new on this board; just got back in the Ford camp with a 2001 SD F250 5.4L with 4.10 diff. Noticed the "new"
factory oil spec is for 5-20. I'm assuming this is a petroleum oil as I saw only petroleum based oil at the auto parts (Castrol I believe was one). My questions are: 1) what's this thin stuff all about? 2) has anyone switched to say 5-30 Mobil 1 synthetic?
3) if so, how long did you wait for break in, etc;
It's really hot here, and I just think I would feel better with 5-30 synthetic. Is there any reason why the 5.4 would not do well with a tiny bit thicker synthetic? Thanks in advance.
factory oil spec is for 5-20. I'm assuming this is a petroleum oil as I saw only petroleum based oil at the auto parts (Castrol I believe was one). My questions are: 1) what's this thin stuff all about? 2) has anyone switched to say 5-30 Mobil 1 synthetic?
3) if so, how long did you wait for break in, etc;
It's really hot here, and I just think I would feel better with 5-30 synthetic. Is there any reason why the 5.4 would not do well with a tiny bit thicker synthetic? Thanks in advance.
Freshman User
Joined: Jun 2001
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oil recomendations?
The reason you see 5w-30 ect. recomended in many new cars and trucks is because of the overhead cam design and oil flow on cold startups. Having the cam on top of the motor tends to lead to dry starts and cam wear with the heavier oil. As for synthetic oil it is great but wait till there is 10-15000 miles on the engine or your rings won't seat right.
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Junior User
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oil recomendations?
Sure hope the rings are set by 1000 miles; most stuff today is ready after a hundred or so.
Ford says little or no-break-in required;
BTW, FWIW, I called Ford Customer Service (after dealership
dodged my questions) and their guy says Mobil-1 5-30
is fine, and the ONLY reason they came up with this 5-20
was to improve fuel economy! Also stated it would NOT void my warranty. So, I'm planning my switch to Mobil-1 around 800- 1000 miles.
Thanks all.
Ford says little or no-break-in required;
BTW, FWIW, I called Ford Customer Service (after dealership
dodged my questions) and their guy says Mobil-1 5-30
is fine, and the ONLY reason they came up with this 5-20
was to improve fuel economy! Also stated it would NOT void my warranty. So, I'm planning my switch to Mobil-1 around 800- 1000 miles.
Thanks all.
Junior User
Joined: Sep 2001
Posts: 83
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oil recomendations?
Sure hope the rings are set by 1000 miles; most stuff today is ready after a hundred or so.
Ford says little or no-break-in required;
BTW, FWIW, I called Ford Customer Service (after dealership
dodged my questions) and their guy says Mobil-1 5-30
is fine, and the ONLY reason they came up with this 5-20
was to improve fuel economy! Also stated it would NOT void my warranty. So, I'm planning my switch to Mobil-1 around 800- 1000 miles.
Thanks all.
Ford says little or no-break-in required;
BTW, FWIW, I called Ford Customer Service (after dealership
dodged my questions) and their guy says Mobil-1 5-30
is fine, and the ONLY reason they came up with this 5-20
was to improve fuel economy! Also stated it would NOT void my warranty. So, I'm planning my switch to Mobil-1 around 800- 1000 miles.
Thanks all.
Junior User
Joined: May 2001
Posts: 60
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oil recomendations?
I use the mobil 1 in my 99sd 250 w/5.4 4:10 rears auto because i like the added protection of the synthetic. But as long as a person follows a scheduled maintainance program the petro based products are fine because we now have better oils than ever.
The change in oil viscosity i think was due to a couple of factors such as fuel economy and the design of the motor.
Good luck with your truck!
The change in oil viscosity i think was due to a couple of factors such as fuel economy and the design of the motor.
Good luck with your truck!
Freshman User
Joined: Sep 2001
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oil recomendations?
I realize this has been discussed to death......
My local Valvoline representrative said, that 5-20 was for gas mileage improvements only, that the synthetic or synthetic blends were reccomended to offset the breakdown of the 20W oil at higher temperatures. His advice, Use 5-30 and take the gas mileage hit.
My local Valvoline representrative said, that 5-20 was for gas mileage improvements only, that the synthetic or synthetic blends were reccomended to offset the breakdown of the 20W oil at higher temperatures. His advice, Use 5-30 and take the gas mileage hit.
