I've been lurking on the boards for the last few months and finally registered today.!
Anyhow, I recently started using synthetics in my 2 Toyota Trucks (99' Tacoma S/C'd 3.4 V6 and 03' 4Runner 4.7 V8). My dealer has used Dino (Quaker State, I think)in the Tacoma since new for 75K miles with 3K mi drain intervals. At 75K I started doing my own maintenance (I now have a place to work on my trucks) and switched to M1 5W30. Since the change I've noticed that the motor is quieter and I've picked up a few MPG. I only have 2K mi on this interval so I can't really form any opinions yet.
Now with the 03' is a whole different issue. I dumped the factory oil at 500mi and replenished with dino - 5w30 Quaker State(dealer). I did the same at 1500mi, 3500mi and @ 5500 I switched to M1 5W30. My initial observation is that this oil was super thin compared to the 5w30 dino. Again, the gas mileage improved and the motor seemed to be smooth as silk. However, it consumed a 1/2 quart during the 5K mi interval. I wrote the consumption off as the motor still breaking in and that perhaps the 5W30 was too thin.. I changed it again @ 10,500K mi but decided to use the M1 10w30 based on what I've read on this board and my experience with the 5W30. I bought a 5QT jug M1 10W30 and I had 2qts of the M1 5W30 left over. Using the stock Toyota oil filter(always) I poured in the 10W30 and noticed that it wasn't much thicker then the 5W. I topped off with 1.5qts of the 5W30.
I've put 1500mi on the truck since the change and again it's consumed 1/2qt of oil! Either the M1 is too thin or my truck has a problem. Is this normal? I don't have this problem in the Tacoma... I've got almost 4K miles left on this oil but I'm thinking of switching to another synth such as Amsoil, Redline, or Royal Purple. If I do what weight should I use? The Amsoil 0W30? Is it thicker then the M1? Just looking for some advice and opinions..
the oil newb,
Justin
[ August 20, 2003, 09:19 AM: Message edited by: kaneman23 ]