Roughly 1500 miles on my new engine (old one replaced under warranty due to oil burning). Nissan has done the first 2 oil changes with regular dino oil so far but my mechanic recomended I switch to synthetic. After reading that switching to synthetic oil too early in the engine's life can harm the engine I told him I would much rather stick with dino. Then he suggested to switch to synthetic blend which is a mix of dino and synthetic claiming that synthetic will protect the new engine better than dino. Are there any benefits in switching to synthetic blend?

I figured I would just stick to regular dino oil b/c I get my oil changes every 3000 miles or 3 months w/e comes first, so I figured I would just be wasting money with synthetic.

Any input is appreciated.

 

Apart from an initial oil change with your new engine, it strikes me that you are a tad **** with your OCI unless all you do is stop and go driving, which I doubt.

If it were my car, I would stick with a good quality dino oil for say the first 15k miles (eg Castro GTX 5w30), then switch to a good synthetic, eg. Redline, Amsoil.

I would pass on the synthetic blend.

 

Synthetic blends are a waste of money.

 

after reading about the consumption issues in the 5th gen forum I'd be inclined to stick with dino and 3-4k OCIs. do you know if Nissan fixed the ring seal problems with the replacement VQ35s?

until/unless you know that your new VQ35 has good ring seal I would not go to extended OCIs (blowby will quickly contaminate any oil). and with short OCIs there's no reason to use synthetic.

re syn blends: most probably are a waste of money (notably castrol syntec blend, valvoline durablend). but some are very good and a very good value (trop arctic for $1.68/qt and Motocraft at ~$10 for 5qt jug at walmart). and valvoline maxlife is a superb syn blend with a very strong add pack, but it's expensive at $3.60 a quart, but you can often get it on sale or rebated.

 

Blends aernt worth it, they are almost never 50 50 blends, usually like 85% dino, 15% synthetic. Big waste of money

Synthetic is what i use, change it every 6k for now, likely will make that 10k or so in the near future.

But dino is fine, stick with it for sure if you're gonna change it every 3k miles, if later on you want to extend your oci's then consider it.

 

thanks for the feedback everyone

 

I would just stick with a good quality dino oil like castrol GTX, and call it a day...it's been proven over at BITOG forums to be a favorite by all the oil enthusiasts...at $10 something per 5 quart jug (at walmart), you simply can't go wrong