Originally Posted By: B320i
Have used the Synpower 5w-40 (I know, not 100% accurate) in a Toyota Land-Cruiser Prado, with the 1GR-FE V6 engine.
The OCI this once was (rather regrettably) nearly 25,000km, with about 5,000km of towing on the limit for this particular vehicle. Being that its a typical "lazy V6" designed for an ILSAC 5w or 10w-30 oil run at roughly 7,500 intervals, I figured an oil carrying European specifications and designed for long drains in their high-performance motors would probably fare well. In any case, the vehicle is used for a 40min highway commute each day, plus long weekend drives.
No UOA, but the engine didn't sound any different after the long OCI, or even after it finally saw an Indy for full service. And it shouldn't, its only done about 101,000km (62K miles) in its 14 year life - ALL highway running, so a very young engine.
25,000kms is A LOT. But all highway makes it far better! What I hate is city cars that do 17,000 kms a year with only one service. Seen that on a ton of Subaru log books when I was looking for a forester. Subaru manual does state pretty clearly, 15,000kms OR 6 months but people think, hey only a couple thousand more kms won't hurt (in 15 months)!