hey guys this prob. sounds like a stupid question, but since ive had my truck i have been useing regular valvoline oil, and was thinking about switching to a full synthetic on my next oil change, but i was thinking that i might need to use a blend then go to full synthetic, i was just unsure so any input would be great. thanks

 

You can go full synthetic with no worries.

 

I second that!

 

with an 05, go for it.......now doing it on my 1994 ranger with 164,000 miles, not a good idea probably, i will stick with my supertech from walmart.

 

Switch.... No worries...

 

For sure, switch. I'm using all synthetic Amsoil lubes all the way down the line (except grease, I use something else synthetic).

In my 3.0 I use their Series 2000 0W30. I change it once at year, usually at about 18,000 to 20,000 miles and the oil is still okay when I send it in for testing. I do 1 or 2 filter changes in that year and add a 1/2 quart or so each time.

I'm using the new microfiber (or nanofiber forget which) oil filters which they say you can use for the whole year -- but with offroading and all I figure I'm better changing it once or twice.

The only way synthetic saves you money in the short run is if you take advantage of extended drain intervals. If my oil once again tests okay when I change it, I'm not doing tests every year anymore. I'm sold on extended drain now.

In the long run it saves you by reducing wear and decreasing friction.

 

go ahead and switch now... im running full synthetic (mobil 1 or amsoil whichever i can get cheaper) and changing the oil every 10,000 miles... i did the same thing on my 92 and it had 350,000 miles on it when i sold it and it still ran great

 

i have a similar question.

i have 40,000+ miles. I've been running regular castrol syntec all this time. I want to switch. can i? should i still use 5w20 (which is recommended). I was told I should use 5w30 now, since my engine is "older". Opinions? Recommendations?

 

when i use mobil 1 i use 5w-30 since thats all i could find for a long time... you will be fine with either

 

is there anything bad about it? i know it works, just wondering if it'll cause more wear.. or is it actually beneficial?

 

The 5w-20 is supposed to give slightly better mpg. Ford used the lower weight oil to increase their CAFE number. I wondered about this when I first got my truck and bookmarked this site: ALL U EVER WANT TO KNOW ABOUT 5W-20

 

so in regards to the article.. using 0w-30 oil is the best huh?

 

I think 5W30 or 0W30 is probably too close to call the difference. I use the 0W30 because that's what the Series 2000 comes in that's closest to the design spec oil.