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I’ve run across info that says pre 2008 models should run on vds-3 or diesel 15w40.
Post in thread 'What Replaced Volvo Penta Full Synthetic SAE 30 Engine Oil?'
https://forums.iboats.com/threads/what-replaced-volvo-penta-full-synthetic-sae-30-engine-oil.668787/post-4980864
pertinent statement...
Recently over the course of just a few days the motor began to lose ability to reach rated max rpm under load. Now we can only achieve between 2500-3000 rpms at FT. I tested the fuel pressure at the rail and found 50 psi at idle and throughout the range up to the reduced max rpm.
The gauge...
Trying to determine the exact part number for my drive to get the cost of repairing u joints. Local repair shop says might not be able to determine until the drive is pulled and number from shaft assy is read off it. Some allow for replacement of spiders and some mandate entire shaft...
I have an 05 Volvo Penta 5.0GXI/SX in my Four Winns that I've owned since 2015. Just hit 500 total hours..Seems that vibration that used to happen only with steering at L/R limits is now evident even before reaching limits and seems to be getting worse. I suspect ujoints or gimbal bearing maybe...
