5w-30 or.... [Archive] - GrandAmGT.com Forum


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05-19-2004, 08:23 PM
5w-30 or 10w-30. what is the difference in these two oils and which one should i get? Also is it alright to switch over to synthetic oil at 65,000miles?

05-19-2004, 08:47 PM
It kinda depends on where you live a little bit. If you live in a warmer environment, you may wanna go with the 10W30 or 40, if you live in colder areas, go with the 5W30. When oil gets hot, it thins out, so if your motor is running hotter, the oil will thin out, and if you have a "thicker" oil, it will lubricate your motor better than a "thinner" oil such as the 5W30. And, I see no problem changing over to a synthetic oil at any time...... synthetics are actually a little better anyway.

05-20-2004, 10:13 AM
I run Mobil 1 Synthetic. I switch to 5w-30 in the winter and back to 10w in the summer. I believe strongly in the synthetics. Saved my Ranger when I burried it in a huge water hole.

05-20-2004, 01:16 PM
I run Mobil 1 Synthetic.

05-20-2004, 02:36 PM
I run 5w-30 Amsoil here in NY. Switched it at about the same mileage, no problems........

05-21-2004, 07:45 AM
5w-30 Mobil1 all year round.

05-21-2004, 07:53 AM
I run 5w-30 dino oil in my car. I haven't had any problems yet and my car doesn't use a drop. The oil is still a dark gold colour when I go to get it changed. I thought about going to Mobil 1, but figure it's not worth the money since the engine is still pretty clean.

05-23-2004, 10:00 AM
I run 5w 30 in the winter and 10w 30 in the summer.

05-24-2004, 10:20 AM
switched to Mobil 1 5w30 at 68k miles, no problems i am thinking of using 10w30 synth when i change next in a few weeks-i dunno, it gets pretty warm here a lot but it doesnt scorch like it would in the south, but autozone has a M1 0w30 i almost thought of using too(better fuel economy?) but thats probably TOO thin for summer